MinorCritical vulnerability

CVE-2026-93872 (CVSS 7.7)

NVD · officialPublished Sep 18, 2026Risk 23/100EPSS 0.4%

Cotonti 1.0.0 passes the base64-decoded cb parameter to unserialize() without allowed_classes restriction in the comments plugin EditAction. Registered users with comment write permissions can instantiate arbitrary PHP objects and potentially achieve file write or code execution through gadget chains.

Technical details

CVSS

7.7

AV:NetworkAC:HighPR:LowUI:None

Evidence and sources

This record is attributed to NVD. Exploitation status and remediation guidance are kept separate from the vulnerability's technical severity.

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