Incorrect Authorization Affecting gitea.dev/routers/web/auth package, versions <1.27.0
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITEADEVROUTERSWEBAUTH-18752795
- published14 Sept 2026
- disclosed21 Jul 2026
- creditkhoadb
Introduced: 21 Jul 2026
CVE-2026-55987 Â (opens in a new tab)How to fix?
Upgrade gitea.dev/routers/web/auth to version 1.27.0 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization through the handleOAuth2SignIn. An attacker can regain access to a previously deactivated account by signing in through an OAuth2 authentication source that does not issue refresh tokens. This allows the attacker to restore their account to active status and obtain a valid session, potentially regaining any previous privileges, including administrative rights.