CVE-2026-58438 Gitea CVE debrief

Who should care

Organizations and users of Gitea, especially those hosting private repositories, should be aware of this vulnerability and take necessary actions to protect their systems. This includes applying patches or updates provided by Gitea, restricting access to sensitive repositories, and monitoring for suspicious activity. Additionally, implementing additional security measures such as Web Application Firewalls (WAFs) and intrusion detection systems can help prevent exploitation of this vulnerability. Gitea users should review their systems and take action to prevent potential tampering with private repositories. Security teams should prioritize patching and verify that Gitea version 1.27.0 or later is deployed. Vulnerability management processes should include checks for this IDOR vulnerability in Gitea deployments. Platform operators should assess their exposure and apply compensating controls if patching is not immediately feasible. Asset inventory and change management processes should account for Gitea deployments and updates. Monitoring and detection capabilities should be reviewed to ensure they can identify potential exploitation attempts. Source tracking and incident response plans should be updated to address this vulnerability. Rollback and change window processes should be prepared for emergency patches. Compensating controls such as Web Application Firewalls (WAFs) and intrusion detection systems can help mitigate the risk of exploitation. The CVE record indicates that the vulnerability has not been modified since its publication on 2026-08-13T17:17:27.807Z. The National Vulnerability Database (NVD) provides additional information on this vulnerability, including its CVSS score and severity classification. Gitea's official advisory and GitHub repository release page for version 1.27.0 also provide relevant information on this vulnerability. The CVE Program record with source-provided CVE metadata is available for reference. The official NIST NVD detail page and source-specific vulnerability assessment provide further details on this vulnerability. Gitea's blog post announcing version 1.27.0 release and GitHub security advisory for GHSA-xv9x-fj9g-vj6h are

Technical summary

CVE-2026-58438 is a Cross-repository IDOR vulnerability in Gitea, allowing attackers to tamper with and comment on private repositories they cannot access. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. Gitea released version 1.27.0, which addresses this issue. The vulnerability can be exploited by an attacker to manipulate and comment on private repositories without having the necessary permissions.

Defensive priority

Organizations using Gitea should prioritize patching to prevent potential tampering with private repositories.

Recommended defensive actions

• Apply patches or updates provided by Gitea to address the Cross-repository IDOR vulnerability
• Restrict access to sensitive repositories and monitor for suspicious activity
• Implement additional security measures, such as Web Application Firewalls (WAFs) and intrusion detection systems
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE-2026-58438 record indicates a Cross-repository IDOR vulnerability in Gitea, allowing attackers to tamper with and comment on private repositories they cannot access. The vulnerability has a CVSS score of 7.5 and is classified as HIGH severity. Gitea released version 1.27.0, which addresses this issue.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.