---
id: CVE-2024-39303
aliases:
  - GHSA-jfgp-674x-6q4p
  - PYSEC-2026-2041
title: Weblate vulnerable to improper sanitization of project backups
summary: Weblate vulnerable to improper sanitization of project backups
severity: medium
cvss: 4.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N'
vendor: weblate
product: weblate
ecosystem: pip
affected:
  - 'weblate >= 4.14, < 5.6.2'
patched:
  - weblate 5.6.2
published: '2024-07-01'
updated: '2026-09-10'
sourceUpdated: '2026-09-10T03:50:16.927291098Z'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-jfgp-674x-6q4p'
references:
  - url: >-
      https://github.com/WeblateOrg/weblate/security/advisories/GHSA-jfgp-674x-6q4p
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-39303'
  - url: >-
      https://github.com/WeblateOrg/weblate/commit/b6a7eace155fa0feaf01b4ac36165a9c5e63bfdd
  - url: 'https://github.com/WeblateOrg/weblate'
tags:
  - osv
  - pip
epss: 0.00318
epssPercentile: 0.22009
ingestedAt: '2026-07-08T18:25:50.655Z'
---

## Overview

### Impact
Weblate didn't correctly validate filenames when restoring project backup. It may be possible to gain unauthorized access to
files on the server using a crafted ZIP file.

### Patches
This issue has been addressed in Weblate 5.6.2 via https://github.com/WeblateOrg/weblate/commit/b6a7eace155fa0feaf01b4ac36165a9c5e63bfdd.

### Workarounds
Do not allow project creation to untrusted users.

### References
Thanks to Bryan Cahill for bringing this issue to our attention.

### For more information
If you have any questions or comments about this advisory:
* Open a topic in [discussions](https://github.com/WeblateOrg/weblate/discussions)
* Email us at [care@weblate.org](mailto:care@weblate.org)


## Affected packages

- `weblate >= 4.14, < 5.6.2`

## Remediation

Upgrade to a patched release:

- `weblate 5.6.2`