JavaScript | Breaking Cybersecurity News | The Hacker News

The Ripple cryptocurrency npm JavaScript library named xrpl.js has been compromised by unknown threat actors as part of a software supply chain attack designed to harvest and exfiltrate users' private keys. The malicious activity has been found to affect five different versions of the package: 4.2.1, 4.2.2, 4.2.3, 4.2.4, and 2.14.2. The issue has been addressed in versions 4.2.5 and 2.14.3. xrpl.js is a popular JavaScript API for interacting with the XRP Ledger blockchain, also called the Ripple Protocol, a cryptocurrency platform launched by Ripple Labs in 2012. The package has been downloaded over 2.9 million times to date, attracting more than 135,000 weekly downloads. "The official XPRL (Ripple) NPM package was compromised by sophisticated attackers who put in a backdoor to steal cryptocurrency private keys and gain access to cryptocurrency wallets," Aikido Security's Charlie Eriksen said . The malicious code changes have been found to be introduced by a...

Threat hunters are warning of a sophisticated web skimmer campaign that leverages a legacy application programming interface (API) from payment processor Stripe to validate stolen payment information prior to exfiltration. "This tactic ensures that only valid card data is sent to the attackers, making the operation more efficient and potentially harder to detect," Jscrambler researchers Pedro Fortuna, David Alves, and Pedro Marrucho said in a report. As many as 49 merchants are estimated to have been affected by the campaign to date. Fifteen of the compromised sites have taken action to remove the malicious script injections. The activity is assessed to be ongoing since at least August 20, 2024. Details of the campaign were first flagged by security firm Source Defense towards the end of February 2025, detailing the web skimmer's use of the " api.stripe[.]com/v1/sources " API, which allows applications to accept various payment methods. The endpoint has...

The problem is simple: all breaches start with initial access, and initial access comes down to two primary attack vectors – credentials and devices. This is not news; every report you can find on the threat landscape depicts the same picture.  The solution is more complex. For this article, we'll focus on the device threat vector. The risk they pose is significant, which is why device management tools like Mobile Device Management (MDM) and Endpoint Detection and Response (EDR) are essential components of an organization's security infrastructure. However, relying solely on these tools to manage device risk actually creates a false sense of security. Instead of the blunt tools of device management, organizations are looking for solutions that deliver device trust . Device trust provides a comprehensive, risk-based approach to device security enforcement, closing the large gaps left behind by traditional device management solutions. Here are 5 of those limitations and how to ov...

Threat actors are using the "mu-plugins" directory in WordPress sites to conceal malicious code with the goal of maintaining persistent remote access and redirecting site visitors to bogus sites. mu-plugins, short for must-use plugins , refers to plugins in a special directory ("wp-content/mu-plugins") that are automatically executed by WordPress without the need to enable them explicitly via the admin dashboard. This also makes the directory an ideal location for staging malware. "This approach represents a concerning trend, as the mu-plugins (Must-Use plugins) are not listed in the standard WordPress plugin interface, making them less noticeable and easier for users to ignore during routine security checks," Sucuri researcher Puja Srivastava said in an analysis. In the incidents analyzed by the website security company, three different kinds of rogue PHP code have been discovered in the directory - "wp-content/mu-plugins/redirect.php," ...

Cybersecurity researchers have discovered several cryptocurrency packages on the npm registry that have been hijacked to siphon sensitive information such as environment variables from compromised systems. "Some of these packages have lived on npmjs.com for over 9 years, and provide legitimate functionality to blockchain developers," Sonatype researcher Ax Sharma said . "However, [...] the latest versions of each of these packages were laden with obfuscated scripts." The affected packages and their hijacked versions are listed below - country-currency-map (2.1.8) bnb-javascript-sdk-nobroadcast (2.16.16) @bithighlander/bitcoin-cash-js-lib (5.2.2) eslint-config-travix (6.3.1) @crosswise-finance1/sdk-v2 (0.1.21) @keepkey/device-protocol (7.13.3) @veniceswap/uikit (0.65.34) @veniceswap/eslint-config-pancake (1.6.2) babel-preset-travix (1.2.1) @travix/ui-themes (1.1.5) @coinmasters/types (4.8.16) Analysis of these packages by the software supply chain ...

An ongoing campaign that infiltrates legitimate websites with malicious JavaScript injects to promote Chinese-language gambling platforms has ballooned to compromise approximately 150,000 sites to date. "The threat actor has slightly revamped their interface but is still relying on an iframe injection to display a full-screen overlay in the visitor's browser," c/side security analyst Himanshu Anand said in a new analysis. As of writing, there are over 135,800 sites containing the JavaScript payload, per statistics from PublicWWW. As documented by the website security company last month, the campaign involves infecting websites with malicious JavaScript that's designed to hijack the user's browser window to redirect site visitors to pages promoting gambling platforms. The redirections have been found to occur via JavaScript hosted on five different domains (e.g., "zuizhongyj[.]com") that, in turn, serve the main payload responsible for performing...

Cybersecurity researchers have discovered two malicious packages on the npm registry that are designed to infect another locally installed package, underscoring the continued evolution of software supply chain attacks targeting the open-source ecosystem. The packages in question are ethers-provider2 and ethers-providerz , with the former downloaded 73 times to date since it was published on March 15, 2025. The second package, likely removed by the malware author themselves, did not attract any downloads. "They were simple downloaders whose malicious payload was cleverly hidden," ReversingLabs researcher Lucija Valentić said in a report shared with The Hacker News. "The interesting part lay in their second stage, which would 'patch' the legitimate npm package ethers , installed locally, with a new file containing the malicious payload. That patched file would ultimately serve a reverse shell." The development marks a new escalation of threat actors...

Elastic has rolled out security updates to address a critical security flaw impacting the Kibana data visualization dashboard software for Elasticsearch that could result in arbitrary code execution. The vulnerability, tracked as CVE-2025-25015 , carries a CVSS score of 9.9 out of a maximum of 10.0. It has been described as a case of prototype pollution. "Prototype pollution in Kibana leads to arbitrary code execution via a crafted file upload and specifically crafted HTTP requests," the company said in an advisory released Wednesday. Prototype pollution vulnerability is a security flaw that allows attackers to manipulate an application's JavaScript objects and properties, potentially leading to unauthorized data access, privilege escalation, denial-of-service, or remote code execution.  The vulnerability affects all versions of Kibana between 8.15.0 and 8.17.3. It has been addressed in version 8.17.3. That said, in Kibana versions from 8.15.0 and prior to 8.17....

Over 1,000 websites powered by WordPress have been infected with a third-party JavaScript code that injects four separate backdoors. "Creating four backdoors facilitates the attackers having multiple points of re-entry should one be detected and removed," c/side researcher Himanshu Anand said in a Wednesday analysis. The malicious JavaScript code has been found to be served via cdn.csyndication[.]com. As of writing, as many as 908 websites contain references to the domain in question. The functions of the four backdoors are explained below - Backdoor 1, which uploads and installs a fake plugin named "Ultra SEO Processor," which is then used to execute attacker-issued commands Backdoor 2, which injects malicious JavaScript into wp-config.php Backdoor 3, which adds an attacker-controlled SSH key to the ~/.ssh/authorized_keys file so as to allow persistent remote access to the machine Backdoor 4, which is designed to execute remote commands and fetches anot...

Cybersecurity researchers have flagged a credit card stealing malware campaign that has been observed targeting e-commerce sites running Magento by disguising the malicious content within image tags in HTML code in order to stay under the radar. MageCart is the name given to a malware that's capable of stealing sensitive payment information from online shopping sites. The attacks are known to employ a wide range of techniques – both on client- and server-side – to compromise websites and deploy credit card skimmers to facilitate theft. Typically, such malware is only triggered or loaded when users visit the checkout pages to enter credit card details by either serving a fake form or capturing the information entered by the victims in real time. The term MageCart is a reference to the original target of these cybercrime groups, the Magento platform that offers checkout and shopping cart features for online retailers. Over the years, such campaigns adapted their tactics by conce...

The North Korean threat actor known as the Lazarus Group has been linked to a previously undocumented JavaScript implant named Marstech1 as part of limited targeted attacks against developers. The active operation has been dubbed Marstech Mayhem by SecurityScorecard, with the malware delivered by means of an open-source repository hosted on GitHub that's associated with a profile named "SuccessFriend." The profile, active since July 2024, is no longer accessible on the code hosting platform. The implant is designed to collect system information, and can be embedded within websites and NPM packages, posing a supply chain risk. Evidence shows that the malware first emerged in late December 2024. The attack has amassed 233 confirmed victims across the U.S., Europe, and Asia. "The profile mentioned web dev skills and learning blockchain which is in alignment to the interests of Lazarus," SecurityScorecard said . "The threat actor was committing both pre-o...

Threat actors have been observed leveraging Google Tag Manager (GTM) to deliver credit card skimmer malware targeting Magento-based e-commerce websites. Website security company Sucuri said the code, while appearing to be a typical GTM and Google Analytics script used for website analytics and advertising purposes, contains an obfuscated backdoor capable of providing attackers with persistent access. As of writing, as many as three sites have been found to be infected with the GTM identifier (GTM-MLHK2N68) in question, down from six reported by Sucuri. GTM identifier refers to a container that includes the various tracking codes (e.g., Google Analytics, Facebook Pixel) and rules to be triggered when certain conditions are met. Further analysis has revealed that the malware is being loaded from the Magento database table "cms_block.content," with the GTM tag containing an encoded JavaScript payload that acts as a credit card skimmer. "This script was designed to ...

The North Korea-linked Lazarus Group has been linked to an active campaign that leverages fake LinkedIn job offers in the cryptocurrency and travel sectors to deliver malware capable of infecting Windows, macOS, and Linux operating systems. According to cybersecurity company Bitdefender, the scam begins with a message sent on a professional social media network, enticing them with the promise of remote work, part-time flexibility, and good pay. "Once the target expresses interest, the 'hiring process' unfolds, with the scammer requesting a CV or even a personal GitHub repository link," the Romanian firm said in a report shared with The Hacker News. "Although seemingly innocent, these requests can serve nefarious purposes, such as harvesting personal data or lending a veneer of legitimacy to the interaction." Once the requested details are obtained, the attack moves to the next stage where the threat actor, under the guise of a recruiter, shares a lin...

The North Korean threat actors behind the Contagious Interview campaign have been observed delivering a collection of Apple macOS malware strains dubbed FERRET as part of a supposed job interview process. "Targets are typically asked to communicate with an interviewer through a link that throws an error message and a request to install or update some required piece of software such as VCam or CameraAccess for virtual meetings," SentinelOne researchers Phil Stokes and Tom Hegel said in a new report. Contagious Interview, first uncovered in late 2023, is a persistent effort undertaken by the hacking crew to deliver malware to prospective targets through bogus npm packages and native apps masquerading as videoconferencing software. It's also tracked as DeceptiveDevelopment and DEV#POPPER. These attack chains are designed to drop a JavaScript-based malware known as BeaverTail, which, besides harvesting sensitive data from web browsers and crypto wallets, is capable of d...

Cybersecurity researchers have disclosed a critical security flaw in the Lightning AI Studio development platform that, if successfully exploited, could have allowed for remote code execution. The vulnerability, rated a CVSS score of 9.4, enables "attackers to potentially execute arbitrary commands with root privileges" by exploiting a hidden URL parameter, application security firm Noma said in a report shared with The Hacker News. "This level of access could hypothetically be leveraged for a range of malicious activities, including the extraction of sensitive keys from targeted accounts," researchers Sasi Levi, Alon Tron, and Gal Moyal said. The issue is embedded in a piece of JavaScript code that could facilitate unfettered access to a victim's development environment, as well as run arbitrary commands on an authenticated target in a privileged context. Noma said it found a hidden parameter called "command" in user-specific URLs – e.g., ...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday placed a now-patched security flaw impacting the popular jQuery JavaScript library to its Known Exploited Vulnerabilities ( KEV ) catalog, based on evidence of active exploitation. The medium-severity vulnerability is CVE-2020-11023 (CVSS score: 6.1/6.9), a nearly five-year-old cross-site scripting (XSS) bug that could be exploited to achieve arbitrary code execution. "Passing HTML containing <option> elements from untrusted sources - even after sanitizing them - to one of jQuery's DOM manipulation methods (i.e. .html(), .append(), and others) may execute untrusted code," according to a GitHub advisory released for the flaw. The problem was addressed in jQuery version 3.5.0 released in April 2020. A workaround for CVE-2020-11023 involves using DOMPurify with the SAFE_FOR_JQUERY flag set to sanitize the HTML string before passing it to a jQuery method. As is typically the case, t...

Cybersecurity researchers are warning of a new stealthy credit card skimmer campaign that targets WordPress e-commerce checkout pages by inserting malicious JavaScript code into a database table associated with the content management system (CMS). "This credit card skimmer malware targeting WordPress websites silently injects malicious JavaScript into database entries to steal sensitive payment details," Sucuri researcher Puja Srivastava said in a new analysis. "The malware activates specifically on checkout pages, either by hijacking existing payment fields or injecting a fake credit card form." The GoDaddy-owned website security company said it discovered the malware embedded into the WordPress wp_options table with the option "widget_block," thus allowing it to avoid detection by scanning tools and persist on compromised sites without attracting attention. In doing so, the idea is to insert the malicious JavaScript into an HTML block widget thr...

Threat hunters have disclosed a new "widespread timing-based vulnerability class" that leverages a double-click sequence to facilitate clickjacking attacks and account takeovers in almost all major websites. The technique has been codenamed DoubleClickjacking by security researcher Paulos Yibelo. "Instead of relying on a single click, it takes advantage of a double-click sequence," Yibelo said . "While it might sound like a small change, it opens the door to new UI manipulation attacks that bypass all known clickjacking protections, including the X-Frame-Options header or a SameSite: Lax/Strict cookie." Clickjacking , also called UI redressing, refers to an attack technique in which users are tricked into clicking on a seemingly innocuous web page element (e.g., a button), leading to the deployment of malware or exfiltration of sensitive data. DoubleClickjacking is a variation of this theme that exploits the gap between the start of a click and the...

North Korean threat actors behind the ongoing Contagious Interview campaign have been observed dropping a new JavaScript malware called OtterCookie . Contagious Interview (aka DeceptiveDevelopment ) refers to a persistent attack campaign that employs social engineering lures, with the hacking crew often posing as recruiters to trick individuals looking for potential job opportunities into downloading malware under the guise of an interview process. This involves distributing malware-laced videoconferencing apps or npm packages either hosted on GitHub or the official package registry, paving the way for the deployment of malware such as BeaverTail and InvisibleFerret. Palo Alto Networks Unit 42, which first exposed the activity in November 2023, is tracking the cluster under the moniker CL-STA-0240. It's also referred to as Famous Chollima and Tenacious Pungsan. In September 2024, Singaporean cybersecurity company Group-IB documented the first major revision to the attack c...