---
id: "CVE-2026-107686"
kind: "vulnerability"
aliases: ["CVE-2026-107686"]
title: "Gitea: locked issues accept reactions from users without write access"
severity: "medium"
cvss: 4.3
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["gitea", "other", "self-hosted"]
not_affected_if: ["anonymous-only-access", "no-locked-issues"]
published_at: "2026-10-18T19:16:32+00:00"
first_seen_at: "2026-10-23T21:57:17+00:00"
updated_at: "2026-10-25T04:39:46+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-107686", "first_seen_at": "2026-10-23T21:57:17+00:00"}]
---

# Gitea: locked issues accept reactions from users without write access

Gitea's web handlers for adding and removing reactions on issues and comments skipped the locked-issue check that the API enforces. A signed-in user who can read a locked issue can add or remove reactions on it and its comments, bypassing the lock's interaction restriction.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `gitea --version` on the server or check the version shown in the admin dashboard and compare it with the fixed release in the advisory.
- Confirm whether the instance has any locked issues where read-only users could react, if that matters to your workflow.

## Fix

- Upgrade Gitea to a release that includes the fix for CVE-2026-107686; the fixed version number is unknown from the sources.

## Timeline

- 2026-10-23T21:57:17+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-107686

## From the sources

The Gitea web handlers for adding and removing reactions on issues and comments did not refuse locked issues for users without write access, although the API did. A signed-in user who could read an issue could therefore add or remove reactions on a locked issue and its comments, bypassing the interaction restriction of the lock. Only reactions were affected; no content could be changed.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_