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Vulnerability | Breaking Cybersecurity News | The Hacker News

Category — Vulnerability
Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public

Cisco Patches CVE-2026-20230 in Unified CM as Exploit Code Goes Public

Jun 04, 2026 Vulnerability / Network Security
Cisco has patched a bug in Unified Communications Manager that lets an unauthenticated attacker on the network write files to the box and, from there, climb to root. It is tracked as CVE-2026-20230 , and proof-of-concept exploit code is already public. Cisco's PSIRT says it has not seen the flaw used in attacks yet. The PoC shortens that runway. The flaw is a server-side request forgery. Unified CM and its Session Management Edition fail to validate certain HTTP requests properly, so a crafted request can push the server into writing arbitrary files onto the underlying OS. Those files are the foothold. Cisco says they can be used later to escalate to root, the top privilege on the system. That two-step is why the score and the rating disagree. The CVSS base is 8.6: it scores the file write (an integrity-only impact, no confidentiality or availability loss) but not the root escalation that follows. Cisco rated the advisory Critical anyway, since the end state is full root. ...
Claude Code GitHub Action Flaw Let One Malicious Issue Hijack Repositories

Claude Code GitHub Action Flaw Let One Malicious Issue Hijack Repositories

Jun 04, 2026 Vulnerability / AI Security
A security researcher found a flaw in Anthropic's Claude Code GitHub Action that let an attacker take over vulnerable public repositories running it, with nothing more than a single opened GitHub issue. Because Anthropic's own action repo used the same workflow, a working attack could have pushed malicious code into the action itself and onto the projects downstream that pull it. RyotaK of GMO Flatt Security reported the core bypass to Anthropic in January, and Anthropic fixed it within four days , with further hardening through the spring; the fixes are in claude-code-action v1.0.94. Anthropic rated the issues 7.8 under CVSS v4.0 and paid a bug bounty. Claude Code GitHub Actions drops Claude into CI/CD pipelines to triage issues, slap on labels, review pull requests, or run slash commands. By default, the workflow gets read and write access to a repo's code, issues, pull requests, discussions, and workflow files. Because those permissions are broad, the action is su...
ThreatsDay Bulletin: AI Agents Gone Wrong, Sketchy C2 Tools, ClickFix Tricks, JS Backdoors & 20+ New Stories

ThreatsDay Bulletin: AI Agents Gone Wrong, Sketchy C2 Tools, ClickFix Tricks, JS Backdoors & 20+ New Stories

Jun 04, 2026 Hacking News / Cybersecurity News
It got stupid again. The internet still feels held together with tape. Bad plugins, old bugs, fake tools, trusted apps doing shady things. Same mess, new wrapper. And now the weird stuff is normal. Forums go down and come back worse. Cheap hackers get better toys. AI starts breaking real systems. Great. Read the whole thing before it ruins your week anyway.
cyber security

The AI Security Vendor Test Most Vendors Hope You Skip

websiteRecoAI Agent Security
Shadow AI, agentic security, a 40-question scorecard, and a POC that tests what demos hide.
cyber security

Gartner: 70% of SOCs Will Pilot AI Agents. Only 15% Will See Results

websiteProphet SecurityAI Security
Here are Gartner’s key questions to ask when pressure-testing AI SOC vendors in production.
WhatsApp, Slack Notifications Could Hijack Google Gemini on Android

WhatsApp, Slack Notifications Could Hijack Google Gemini on Android

Jun 03, 2026 Vulnerability / Artificial Intelligence
A single poisoned notification from WhatsApp, Slack, SMS, Signal, Instagram, or Messenger could have hijacked Google Gemini's voice assistant on Android and made it open a victim's connected windows, fake a message from their boss, push the phone into a Zoom call, or quietly poison its long-term memory. No malicious app on the phone is required. The assistant just had to treat a hostile notification as useful context. The research, published by SafeBreach's Or Yair, follows the team's earlier " Invitation Is All You Need " work, which pulled off similar tricks through malicious Google Calendar invites. After that, Google hardened Gemini against indirect prompt injection. Yair found a way around the new defenses. Google has since patched it, SafeBreach lists no CVE for the issue, and there is no evidence that the technique was ever used in the wild. On Android, Gemini's Utilities feature can read and reply to your notifications, including ones ...
One-Click GitHub Dev Attack Lets Attackers Steal Full GitHub OAuth Tokens

One-Click GitHub Dev Attack Lets Attackers Steal Full GitHub OAuth Tokens

Jun 03, 2026 Vulnerability / Software Development
Cybersecurity researchers have disclosed a one-click attack via Microsoft Visual Studio Code (VS Code) that makes it possible to steal a user's GitHub token. "Just by clicking a link, it's possible for an attacker to steal a GitHub token that can read and write to your repos, including private ones," security researcher Ammar Askar said . GitHub supports a feature called GitHub.dev that runs as a lightweight web-based source code editor in the web browser's sandbox by launching a VS Code environment. It allows users to send pull requests and make commits. "This functionality is achieved by github.com POSTing over an OAuth token to github.dev that allows it to interact with GitHub on your behalf," Askar said. "The token is not scoped to the particular repo you interacted with, meaning it has full access to every other repo that you have access to." In a nutshell, the vulnerability allows attackers to install malicious VS Code extensio...
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