CVE-2026-109308

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Source
https://cve.org/CVERecord?id=CVE-2026-109308
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109308.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109308
Aliases
  • GHSA-5m2g-hhqr-84pc
Published
2026-10-12T16:05:04Z
Modified
2026-10-13T02:46:44Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 RCE via actionCacheUpdates Behavior Injection
Details

Craft CMS 4.0.0 before 4.18.7 and 5.0.0 before 5.10.14 passes the raw 'updates' request parameter in AppController::actionCacheUpdates to UpdatesModel without Component::cleanseConfig(), allowing behavior and event-handler injection. Authenticated control panel users with the performUpdates permission or Updates-utility access can supply 'as' or 'on' keys, such as an AttributeTypecastBehavior gadget, to execute arbitrary code.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-94"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109308.json"
}
References

Affected packages

Git / github.com/craftcms/cms

Affected ranges

Type
GIT
Repo
https://github.com/craftcms/cms
Events
Introduced
982efcd14d7e93a1a54f0905b61f242de6b53d8a
Fixed
565b88afb88df790c5465bcbb0a0b8aef2903dd2
Introduced
f6a8fb685d44e387435825e3a96809eeda4973a6
Fixed
6804f92fbdd93c3a3fb40f15bcd76a406e97634d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "4.0.0"
        },
        {
            "fixed":  "4.18.7"
        },
        {
            "introduced":  "5.0.0"
        },
        {
            "fixed":  "5.10.14"
        }
    ],
    "source":  "AFFECTED_FIELD"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109308.json"