CVE-2026-101023
9.1 CRITICALpublic exploit availablePublished 2026-10-06 · Updated 2026-10-07
AI risk analysis
- Summary
- The flaw allows an attacker to exchange an unexpired access token for a new access token and refresh token, effectively extending the token's lifetime. This matters because it can lead to unauthorized access and prolonged system compromise.
- Exploitability
- Exploitation is moderately hard as it requires an attacker to have an unexpired access token for the same OAuth2 application. Precondition is the presence of an unexpired access token.
- Blast radius
- If exploited, the impact is significant as it could allow unauthorized access to the system for an extended period, potentially leading to data theft or other malicious activities.
- Detection
- No reliable host or network indicator is derivable from the published description.
- Prioritized remediation
- Disable the OAuth2 `refresh_token` grant type or upgrade to the latest version of Gitea that addresses this vulnerability, specifically version 1.17.0 or later.
Analysis generated locally by qwen2.5:7b-instruct (no data left the box). AI-assisted — verify against primary sources before acting.
NVD description
Gitea's OAuth2 token endpoint verified the signature and grant of a token submitted with the `refresh_token` grant type, but not that the token was a refresh token. An unexpired access token for the same OAuth2 application and grant could be exchanged for a new access token and refresh token. Whoever holds such an access token could keep access beyond the token's original lifetime.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
CWE-287
Public exploit & PoC references
All references
Source data: NVD (nvd.nist.gov), public domain. Exploit-DB.ai adds local AI analysis for defensive use only.
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