CVE-2026-91939 — Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter
Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize() without allowed_classes restriction, allowing unauthenticated attackers to instantiate arbitrary PHP c…
Published: 2026-09-15 · CVSS: 9.3 · CVSS 4.0
Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize() without allowed_classes restriction, allowing unauthenticated attackers to instantiate arbitrary PHP classes with attacker-controlled properties. Attackers can exploit PHP object injection through crafted serialized payloads to trigger gadget chains and achieve database manipulation or code execution.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7