VulnSocial

CVE-2026-109308

LOWCVSS 8.7 · HIGH

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

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.

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0.0/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-94

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

NONE

Threat summary

  • 1 mentions across 1 observed day

What's happening

  • 1 total mentions across 1 day

Deep dive

Activity timeline1 mentions / 1d
00111Mentions · 2026-10-14: 110-14
Referenced assets1 URL
By indicator
Full discourse1 post
  • CCB Alert@CCBalert

    Warning: High-severity authenticated #RCE flaws in #CraftCMS (#CVE-2026-109308 & #CVE-2026-109305, CVSS 8.7/8.8). These allow code execution via template bypass and update parameter injection. #Patch #Patch #Patch More info: https://github.com/craftcms/cms/security/advisories

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