CVE-2026-44264: Weblate is vulnerable to XSS via crafted Markdown

Severity: medium (CVSS 4.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-07 · updated 2026-10-26
Weakness: CWE-80

Description

Weblate is a web based localization tool. Prior to version 5.17.1, the Markdown renderer used in user comments and other user-provided content didn't properly sanitize some attributes. This issue has been patched in version 5.17.1.

Affected products

WeblateOrg weblate: before 5.17.1 — fixed in 5.17.1

How to fix

Upgrade to a fixed version: WeblateOrg weblate 5.17.1. Check the vendor advisory for mitigations.

References

https://github.com/WeblateOrg/weblate/commit/85abc9df88b7464f4c0e794aef752e45f4230f75
https://github.com/WeblateOrg/weblate/pull/19259
https://github.com/WeblateOrg/weblate/releases/tag/weblate-5.17.1
https://github.com/WeblateOrg/weblate/security/advisories/GHSA-5cmv-3rc4-7279

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