Vulnerability · Published Apr 15, 2026 · Assigned by GitHub_M

CVE-2026-33220Weblate: JavaScript localization CDN add-on allows arbitrary local file read outside the repository

Medium 6.8

In plain English

A medium-severity path traversal in weblate from WeblateOrg. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)6.8Medium

Exploit odds (30 days)0.3%top 74.5% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Weblate is a web based localization tool. In versions prior to 5.17, the translation memory API exposed unintended endpoints, which in turn didn't perform proper access control. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can disable this feature as the CDN add-on is not enabled by default.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
PyPI	weblate	5.17	GHSA-mqph-7h49-hqfm
PyPI	weblate	5.17	PYSEC-2026-153

Affected products (as reported)

Vendor	Product	Versions
WeblateOrg	weblate	< 5.17

Weakness: CWE-22, CWE-200 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

References

https://github.com/WeblateOrg/weblate/security/advisories/GHSA-mqph-7h49-hqfm x_refsource_CONFIRM
https://github.com/WeblateOrg/weblate/pull/18516 x_refsource_MISC