weblate up to 5.16 Configuration path traversal

Summaryinfo

A vulnerability categorized as problematic has been discovered in weblate up to 5.16. This impacts an unknown function of the component Configuration Handler. Such manipulation leads to path traversal. This vulnerability is documented as CVE-2026-33435. The attack can be executed remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in weblate up to 5.16. Affected by this issue is an unknown functionality of the component Configuration Handler. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to CWE-23. The product uses external input to construct a pathname that should be within a restricted directory, but it does not properly neutralize sequences such as ".." that can resolve to a location that is outside of that directory. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Weblate is a web based localization tool. In versions prior to 5.17, the project backup didn't filter Git and Mercurial configuration files which could lead to remote code execution under certain circumstances. This issue has been fixed in version 5.17. If developers are unable to update immediately, they can limit the scope of the vulnerability by restricting access to the project backup, as it is only accessible to users who can create projects.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-33435 since 03/19/2026. The exploitation is known to be difficult. The attack may be launched remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1006 by the MITRE ATT&CK project.

Upgrading to version 5.17 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• weblate

Version

• 5.0
• 5.1
• 5.2
• 5.3
• 5.4
• 5.5
• 5.6
• 5.7
• 5.8
• 5.9
• 5.10
• 5.11
• 5.12
• 5.13
• 5.14
• 5.15
• 5.16

CPE 2.3info

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CPE 2.2info

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