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Description

Weblate is a web based localization tool. In versions prior to 5.17, repository-boundary validation relies on string prefix checks on resolved absolute paths. In multiple code paths, the check uses startswith against the repository root path. This is not path-segment aware and can be bypassed when the external path shares the same string prefix as the repository path (for example, repo and repo_outside). This issue has been fixed in version 5.17.

PUBLISHED Reserved 2026-04-10 | Published 2026-04-15 | Updated 2026-04-16 | Assigner GitHub_M




MEDIUM: 5.0CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N

Problem types

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

< 5.17
affected

References

github.com/...eblate/security/advisories/GHSA-ffgh-3jrf-8wvh

github.com/...ommit/e30dbcb33ae78e754ecef192d54f996b89cb4e15

cve.org (CVE-2026-40256)

nvd.nist.gov (CVE-2026-40256)

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