CVE-2026-86035

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.

CVSS v3 8.5 HIGH

8.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/WeblateOrg/weblate/commit/f60a9759a6d851bd10ccdefe9b1b7f0cdb9e9bbd
https://github.com/WeblateOrg/weblate/pull/20768
https://github.com/WeblateOrg/weblate/releases/tag/weblate-2026.8
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-327h-qqgm-qv55

Configurations

No configuration.

History

29 Sep 2026, 15:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-29 15:17

Updated : 2026-10-02 13:18

NVD link : CVE-2026-86035

Mitre link : CVE-2026-86035

CVE.ORG link : CVE-2026-86035

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CWE-88

Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')

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