Paper/Archive/CVE-2026-58426

CVE-2026-58426

Gitea Gitea Open Source Git Server — Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write

EPSS 0.2%public exploit CVSS 9.6

critical.is priorityof 100

CVSS 9.6 (CNA)9.6 / 10 × 3028.8 Not in CISA KEV+300.0 EPSS percentile 14.3.143 × 202.9 Exploit: SSVC poc+1010.0 SSVC exploitation: poc+100.0

Description · from the CVE record

Gitea Actions Artifacts V4 signed URL HMAC ambiguity allows cross-repository artifact read and cross-task upload-state write

Affected

ProductAffectedFixed inSource

Gitea Open Source Git Server1.22.0 – 1.26.1–CNA

Scores by source

Gitea (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/go-gitea/gitea/security/advisories/GHSA-hg5r-vq93-9fv6 patchgithub.com/go-gitea/gitea/pull/37707 refgithub.com/go-gitea/gitea/releases/tag/v1.26.2 refblog.gitea.com/release-of-1.26.2