---
id: CVE-2026-86035
title: >-
  Weblate is a web-based continuous localization platform used to manage
  software translations
summary: >-
  Weblate is a web-based continuous localization platform used to manage
  software translations. Weblate 4.11.1 through 2026.7.1 contains an
  argument-injection vulnerability in its Mercurial backend. Repository
  filenames beginning with - co…
severity: high
cvss: 8.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H'
cwe:
  - CWE-78
  - CWE-88
vendor: WeblateOrg
product: weblate
affected:
  - 'weblate >= 4.11.1, < 2026.8'
published: '2026-09-29'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T15:17:30.407'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-86035'
references:
  - url: >-
      https://github.com/WeblateOrg/weblate/commit/f60a9759a6d851bd10ccdefe9b1b7f0cdb9e9bbd
    label: security-advisories@github.com
  - url: 'https://github.com/WeblateOrg/weblate/pull/20768'
    label: security-advisories@github.com
  - url: 'https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.8'
    label: security-advisories@github.com
  - url: >-
      https://github.com/WeblateOrg/weblate/security/advisories/GHSA-327h-qqgm-qv55
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-29T16:39:33.260Z'
---

## Overview

Weblate is a web-based continuous localization platform used to manage software translations. Weblate 4.11.1 through 2026.7.1 contains an argument-injection vulnerability in its Mercurial backend. Repository filenames beginning with - could be interpreted as Mercurial options instead of literal paths. An authenticated user with project-scoped component.edit permission could exploit this through a Mercurial-backed RESX component using the Update RESX files add-on. A later repository update could execute arbitrary commands with the privileges of the Weblate service account. This is a residual incomplete fix for CVE-2022-23915. This issue has been patched in version 2026.8.

## Remediation

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