CVE-2026-91939Disclosure

LOWCVSS 9.3 · CRITICAL

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD description

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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-502

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

1 mentions across 1 observed day

What's happening

Technical details provided in 1 signal
Disclosure: 1 classified signal
1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d

Signal classification1 categories

Disclosure

1100.0%

Referenced assets1 URL

By indicator

https://www.cve.org/CVERecord?id=CVE-2026-91939

Full discourse1 post

CVE@CVEnew47d
Disclosure
CVE-2026-91939 Cotonti 1.0.0 Comments plugin passes the ci GET parameter to unserialize() without allowed_classes restriction, allowing unauthenticated attackers to instantiate arbi… https://www.cve.org/CVERecord?id=CVE-2026-91939
Post summary
The tweet announces CVE-2026-91939 in Cotonti 1.0.0 Comments plugin, describing an unserialize() flaw that lets unauthenticated attackers instantiate arbitrary objects, and links to the CVE record.
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