Hackers are now actively exploiting a critical Gitea vulnerability, CVE-2026-60004

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Hackers are now actively exploiting a critical Gitea vulnerability, CVE-2026-60004, according to CISA and multiple security reports released on August 26, 2026.
The flaw allows remote code execution (RCE) on vulnerable self-hosted Gitea servers and has been added to CISA's Known Exploited Vulnerabilities (KEV) catalog.

What is the vulnerability?

  • CVE-2026-60004 is a critical code injection/RCE flaw with a CVSS score of 9.8.
  • It affects Gitea versions 1.17 through 1.27.0 and is fixed in Gitea 1.27.1.
  • An attacker with repository write access can abuse the diffpatch API endpoint to install a malicious Git hook and execute shell commands as the Gitea service account.
  • Because many Gitea environments allow open registration by default, a threat actor may be able to simply create an account, create a repository, and exploit the vulnerability without needing stolen credentials.

Security researchers reported a real-world compromise in which attackers exploited CVE-2026-60004 against a self-hosted Gitea instance and deployed a cryptocurrency-mining payload. The victim initially discovered the incident after their hosting provider reported abnormally high CPU usage.

The attack chain reportedly:

  1. Registered an account on the exposed Gitea server.
  2. Created a repository.
  3. Triggered the diffpatch vulnerability.
  4. Executed commands inside the Gitea container.
  5. Downloaded and launched a miner-like payload.

A successful compromise could expose:

  • Source code repositories
  • Gitea configuration files
  • Database credentials
  • OAuth tokens
  • Application secrets
  • CI/CD environment data
For organizations using Gitea internally, especially internet-facing instances, this represents a significant risk of lateral movement and credential theft.

Upgrade immediately to Gitea 1.27.1 or later.

Disable open registration until patching is complete.
Review:
  • Newly created user accounts
  • Recently created repositories
  • Gitea audit logs
  • High CPU usage alerts
  • Unexpected Git hooks or scripts
If your server was exposed and vulnerable, assume credentials may have been accessed and rotate:
  • Database passwords
  • OAuth secrets
  • API tokens
  • Internal service credentials
 I would classify this as a high-priority patch-and-hunt item for any self-hosted Gitea environment.

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