---
id: CVE-2026-23535
aliases:
  - GHSA-mmwx-79f6-67jg
  - PYSEC-2026-2053
title: >-
  Weblate wlc path traversal vulnerability: Unsanitized API slugs in download
  command 
summary: >-
  Weblate wlc path traversal vulnerability: Unsanitized API slugs in download
  command 
severity: high
cvss: 8
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H'
vendor: wlc
product: wlc
ecosystem: pip
affected:
  - wlc < 1.17.2
patched:
  - wlc 1.17.2
published: '2026-01-16'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-mmwx-79f6-67jg'
references:
  - url: 'https://github.com/WeblateOrg/wlc/security/advisories/GHSA-mmwx-79f6-67jg'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-23535'
  - url: 'https://github.com/WeblateOrg/wlc/pull/1128'
  - url: >-
      https://github.com/WeblateOrg/wlc/commit/216e691c6e50abae97fe2e4e4f21501bf49a585f
  - url: 'https://github.com/WeblateOrg/wlc'
  - url: 'https://github.com/WeblateOrg/wlc/releases/tag/1.17.2'
tags:
  - osv
  - pip
epss: 0.00393
epssPercentile: 0.3072
ingestedAt: '2026-07-08T18:25:51.359Z'
---

## Overview

### Impact
Multi-translation download could write to an arbitrary location when instructed by a crafted server.

### Patches
* https://github.com/WeblateOrg/wlc/pull/1128

### Workarounds
Do not use `wlc download` with untrusted servers.

### References
This issue was reported to us by [wh1zee](https://hackerone.com/wh1zee) via HackerOne.

## Affected packages

- `wlc < 1.17.2`

## Remediation

Upgrade to a patched release:

- `wlc 1.17.2`