# CVE-2026-33214: Weblate improper access control in translation memory API

Source: https://junglewise.ai/threats/cve-2026-33214-weblate-improper-access-control-in-translation-memory-api  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-15. Updated: 2026-06-08  
License: CC BY 4.0 with a link back

CVE-2026-33214 · Severity: medium · CVSS 4.3 · Published 2026-04-15

Weblate is a web-based tool used by organizations to manage software translations and localization. A security flaw in its translation memory component allowed unauthorized users to access or modify translation data through unintended programming interfaces. This could lead to unauthorized changes to translation databases, potentially affecting the accuracy of localized software.

Technologies: [weblate (PyPI)](https://junglewise.ai/threats/technologies/weblate), [Weblate](https://junglewise.ai/threats/technologies/weblate-weblate). Vendors: [PyPI](https://junglewise.ai/threats/vendors/pypi), [Weblate](https://junglewise.ai/threats/vendors/weblate).

## Quick answers

**Is CVE-2026-33214 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-33214 being exploited in the wild.

**How severe is CVE-2026-33214?** Medium severity, with a CVSS score of 4.3, published 15 April 2026.

**Which products and versions are affected?** weblate (PyPI) < 5.17, ECOSYSTEM:introduced=0,fixed=5.17.

**Is there a fix for CVE-2026-33214?** Yes. weblate (PyPI): upgrade to 5.17 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-33214 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2026-33214?** Check whether you run weblate (PyPI) or Weblate at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- weblate (PyPI): upgrade to 5.17 or later

  ```sh
  pip install "weblate>=5.17"
  ```


## Technical details

A missing authorization vulnerability (CWE-862) existed in Weblate's translation memory API. The `MemoryViewSet` was incorrectly based on `ModelViewSet`, which automatically exposed write operations (create and update) that were not intended to be public or lacked proper access checks. An authenticated attacker with network access could leverage these unintended endpoints to modify translation memory entries. The fix involved transitioning the API to a `ReadOnlyModelViewSet` to restrict available operations. Users can mitigate this by blocking the `/api/memory/` path at the HTTP server level.

## Affected products

- WeblateOrg Weblate < 5.17

## Identifiers

- CVE-2026-33214
- GHSA-mpf5-3vph-q75r
- PYSEC-2026-152

## Timeline

- 2026-03-18: patched: Pull request merged to fix the API endpoints
- 2026-04-15: disclosed: Initial disclosure and NVD publication
- 2026-04-16: advisory: GitHub Advisory published

## References

- [https://github.com/WeblateOrg/weblate/security/advisories/GHSA-mpf5-3vph-q75r](https://github.com/WeblateOrg/weblate/security/advisories/GHSA-mpf5-3vph-q75r)
- [https://github.com/WeblateOrg/weblate/pull/18513](https://github.com/WeblateOrg/weblate/pull/18513)
- [https://github.com/pypa/advisory-database/tree/main/vulns/weblate/PYSEC-2026-152.yaml](https://github.com/pypa/advisory-database/tree/main/vulns/weblate/PYSEC-2026-152.yaml)
- [https://api.github.com/repos/WeblateOrg/weblate/security-advisories/GHSA-mpf5-3vph-q75r](https://api.github.com/repos/WeblateOrg/weblate/security-advisories/GHSA-mpf5-3vph-q75r)

## Related threats

- [Weblate argument injection in Mercurial backend](https://junglewise.ai/threats/cve-2026-86035-weblate-is-a-web-based-continuous-localization-platform-used-to)
- [Weblate IDOR in GroupViewSet authorization bypass](https://junglewise.ai/threats/cve-2026-55228-weblate-idor-in-groupviewset-authorization-bypass)
- [Weblate observable object existence disclosure via HTTP status codes](https://junglewise.ai/threats/cve-2026-55227-weblate-observable-object-existence-disclosure-via-http-status)
- [PYSEC-2026-2037 - Weblate leaks information via screenshots](https://junglewise.ai/threats/cve-2026-21889-weblate-information-disclosure-via-unprotected-screenshots)
- [PYSEC-2026-2040 - Weblate has an arbitrary file read via symbolic links](https://junglewise.ai/threats/cve-2025-68279-weblate-has-an-arbitrary-file-read-via-symbolic-links)