CVE-2026-25779 Gitea CVE debrief

Who should care

Users of Gitea versions up to and including 1.25.4 should apply patches or mitigations to prevent potential redirect bypass attacks. Gitea administrators and security teams should review and implement additional security measures such as URL validation and sanitization.

Technical summary

The vulnerability exists due to improper handling of redirect_to values in Gitea. An attacker could exploit this by crafting a malicious URL with raw or percent-encoded backslashes, potentially bypassing intended redirects. This could lead to phishing or other malicious activities. Gitea versions up to and including 1.25.4 are affected. Users of Gitea should verify their deployments and apply patches or updates to prevent potential redirect bypass attacks. Gitea administrators and security teams should review and implement additional security measures such as URL validation and sanitization to mitigate the risk of this vulnerability.

Defensive priority

Medium priority due to the potential for attackers to exploit this vulnerability for phishing or other malicious activities.

Recommended defensive actions

• Apply patches or updates to Gitea versions up to and including 1.25.4
• Implement additional security measures such as URL validation and sanitization
• Monitor for suspicious activity and potential exploit attempts
• 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 record was published on 2026-07-03T21:16:57.923Z and was last modified on 2026-07-07T18:16:36.797Z. The NVD entry is currently Deferred. Evidence is limited to CVE and NVD information. Defenders should verify Gitea version deployments and review vendor advisories for patching guidance.

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.