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TI-2026-49961 Aliases CVE-2026-71294GHSA-rm37-v7mc-6795

Cotonti CMS Comments Plugin PHP Object Injection via Unrestricted unserialize() in Create/Edit Actions

Priority LOW 34CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-502.

Summary

Cotonti CMS's Comments plugin deserializes user-supplied data without restricting the classes that may be instantiated. In plugins/comments/controllers/actions/CreateAction.php, a POST parameter obtained via (trim-only sanitization) is passed to with no restriction, reachable by any member with write access to comments (the default setting in plugins/comments/comments.setup.php).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00379 32nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
CotontiCotontiall versions—No fix listedCNA
  • Cotonti VendorCotonti Affected all versions Fixed in — No fix listed CNA

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-71294
  2. 2026-10-03 Alias added: GHSA-rm37-v7mc-6795

References

Advisory 2

  • TI-2026-62074 Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter CVSS 4.0CRITICAL 9.3
  • TI-2026-63195 Cotonti through 1.0.0 Predictable Password Recovery Token via Weak PRNG CVSS 4.0CRITICAL 9.2
  • TI-2026-41862 Cotonti Siena 0.9.26 CSRF via admin.php Config Update Endpoint CVSS 4.0HIGH 8.7
  • TI-2026-84359 Predictable tokens in Cotonti let attackers bypass email verification CVSS 4.0MEDIUM 6.3
  • TI-2025-28591 A vulnerability has been found in Cotonti Siena v0.9.25. CVSS 3.1MEDIUM 5.4
  • TI-2024-16007 A stored cross-site scripting (XSS) vulnerability in the Edit Page function of Cotonti… CVSS 3.1MEDIUM 5.4
See all 26 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences