---
id: CVE-2026-101023
title: >-
  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
summary: >-
  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 coul…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-287
vendor: gitea
product: gitea
affected:
  - gitea < 28.1.0
patched:
  - gitea 28.1.0
published: '2026-10-06'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T14:39:07.980'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101023'
references:
  - url: 'https://blog.gitea.com/release-of-28.1.0/'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/39501'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/39507'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/releases/tag/v28.1.0'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-469m-x4mw-38r3'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101023.json
  - url: 'https://access.redhat.com/security/cve/CVE-2026-101023'
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-101023'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
  - score-dispute
epss: 0.00353
epssPercentile: 0.28798
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: total
  timestamp: '2026-10-07T20:03:22.628993Z'
scores:
  nvd: 9.1
  vendor: 5.4
  adp: 9.1
ingestedAt: '2026-10-06T22:23:15.964Z'
---

## Overview

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.

## Affected

- `gitea < 28.1.0`

## Remediation

Upgrade past the affected range:

- `gitea 28.1.0`

## Vendor advisories

- **Red Hat VEX** · updated 2026-10-07 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-101023.json)