CVE-2026-58440

6.8 mediumEPSS 0.5%

Medium (6.8). EPSS 0.5% chance of exploitation in the next 30 days. Fixed in gitea.dev 1.27.0.

Webhooks created by a collaborator keep firing after their repo access is revoked → ongoing real-time exfiltration of private repo content (incomplete revocation cleanup in `DeleteCollaboration`)

Severity

CVSS 3.1

6.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE: CWE-284
Published: 2026-08-13
Modified: 2026-08-26
Record from: the NVD, synced 2026-10-19

Packages (OSV)

Advisory	Ecosystem	Package	Affected	Fixed in
GHSA-66m4-5jjr-2rg5	Go	gitea.dev	<1.27.0	1.27.0
GO-2026-6033	Go	gitea.dev	<1.27.0	1.27.0

References

https://blog.gitea.com/gitea-1.27.0-is-released/
https://github.com/go-gitea/gitea/releases/tag/v1.27.0
https://github.com/go-gitea/gitea/security/advisories/GHSA-66m4-5jjr-2rg5
https://github.com/go-gitea/gitea/security/advisories/GHSA-66m4-5jjr-2rg5

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