CVE-2026-101023

criticalpriority · track · 0EPSS 0.004 · 29 %ileDEUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.35% (29th) EPSS

CVSS 9.1 · critical

Is it mine?

6 products

Check your exposure

Who says so?

3 sources

osv · cert_bund · nvd

EPSS · scored 2026-10-27

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

Technical severity, 0–10. One row per scoring source.

9.1

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 8.3–9.1

v3.19.1criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Nsecondaryexploitability 3.9 · impact 5.2

v3.18.3highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-287US

affected products (6)

Products and version ranges known to be affected.

Open Source Gitea <28.0.0all versionscert_bundDE
Open Source Gitea <28.0.1all versionscert_bundDE
Open Source Gitea< 28.0.0cert_bundDE
Open Source Gitea< 28.0.1cert_bundDE
gitea gitea< 28.1.0nvdUScpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:*
Bitnami gitea< 28.1.0osvUSpkg:bitnami/gitea

advisories (2)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2026-3792Gitea: Mehrere SchwachstellenDeutsch2026-10-06csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Gitea ausnutzen, um beliebigen Programmcode auszuführen, erweiterte Berechtigungen zu erlangen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder offenzulegen sowie Cross-Site-Scripting-Angriffe durchzuführen.
BIT-gitea-2026-101023Gitea OAuth2 refresh token grant accepts access tokens2026-10-14vendor · osvUS
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.

also known as (1)

Other names and identifiers for this entity.

GHSA-469m-x4mw-38r3 osv

sources

Which sources assert this record, and when.

osv cert_bund nvd NVD CVE.org MITRE

published 2026-10-06modified 2026-10-13

references (5) nvd

External citations — patches, advisories, analysis.

https://blog.gitea.com/release-of-28.1.0/Release Notes
https://github.com/go-gitea/gitea/pull/39501Patch
https://github.com/go-gitea/gitea/pull/39507Patch
https://github.com/go-gitea/gitea/releases/tag/v28.1.0Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3Vendor Advisory

scry

Attackers weaponise vulnerabilities like this against internet-exposed services. See what is exposed on your perimeter with a free passive scan.

Free scan