---
id: CVE-2026-103670
title: >-
  When a Gitea Actions run was inserted, older runs in the same workflow-level
  concurrency group were cancelled without checking whether the new run still
  needed approval
summary: >-
  When a Gitea Actions run was inserted, older runs in the same workflow-level
  concurrency group were cancelled without checking whether the new run still
  needed approval. Because fork pull request runs are inserted under the base
  reposito…
severity: high
cvss: 7.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-667
vendor: Gitea
product: gitea.dev
affected:
  - gitea.dev <= 1.27.3
published: '2026-10-06'
updated: '2026-10-07'
sourceUpdated: '2026-10-07T16:17:33.250'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-103670'
references:
  - url: 'https://blog.gitea.com/release-of-28.0.0/'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/pull/39399'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/releases/tag/v28.0.0'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
  - url: 'https://github.com/go-gitea/gitea/security/advisories/GHSA-4j4g-m7mr-hp5j'
    label: 88ee5874-cf24-4952-aea0-31affedb7ff2
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-07T15:55:33.888984Z'
ingestedAt: '2026-10-06T20:16:42.498Z'
---

## Overview

When a Gitea Actions run was inserted, older runs in the same workflow-level concurrency group were cancelled without checking whether the new run still needed approval. Because fork pull request runs are inserted under the base repository, a user who can open a pull request from a fork could cancel trusted in-progress runs that share a concurrency group with `cancel-in-progress` enabled, without approval and without running any code. On self-hosted runners this can interrupt deployments and leave partial state behind.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.