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Vulnerability record · CVE-2026-55987 · published 13 August 2026

CVE-2026-55987: Incorrect authorization vulnerability

OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)

8.1 CVSS 3.1 High EPSS 0.41% · top 67.0% CWE-863 · Incorrect authorization Deferred
8.1CVSS 3.1 base score
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
26 Aug 2026Last modified by NVD

Description

OAuth2 sign-in reactivates an administrator-deactivated account on auth sources without refresh tokens (incomplete fix of #38009)

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

References

LinkTags
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-vrhc-jjfc-m3m3
https://github.com/go-gitea/gitea/security/advisories/GHSA-vrhc-jjfc-m3m3

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-55987), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.