CVE-2026-91939

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Source

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

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91939.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-91939

Published

2026-09-15T20:56:45Z

Modified

2026-09-18T03:30:22Z

Severity

9.3 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator

Summary

Cotonti 1.0.0 Comments Plugin PHP Object Injection via ci Parameter

Details

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.

Database specific

{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-502"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/91xxx/CVE-2026-91939.json"
}

References

Affected packages

Git / github.com/cotonti/cotonti

Affected ranges

Type

GIT

Repo

https://github.com/cotonti/cotonti

Events

Introduced

0d554e939a315e7f7f18fba3ca1132b80c6a1adb

Last Affected

0d554e939a315e7f7f18fba3ca1132b80c6a1adb

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "1.0.0"
        },
        {
            "last_affected": "1.0.0"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

1.*

1.0.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-91939.json"