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TI-2026-62448 Aliases CVE-2026-92592GHSA-24f9-r76v-62p8

Craft CMS before 4.18.6 Remote Code Execution via signed cookie

Priority MEDIUM 41CWE-1336Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-1336.

Summary

Craft CMS 4.8.0 through 4.18.5 and 5.0.0 through 5.10.12 sign an authenticated user's attacker-controlled license-shun cookie with the same key and format used to validate signed redirect parameters, because the HMAC signature is not bound to its purpose (Yii's cookieValidationKey is derived from the same Craft securityKey used for signed request parameters). An authenticated, non-administrator user (Control Panel access is not required) can set the cookie via the license-shun endpoint and transplant the signed envelope into the redirect parameter; on a successful login, Craft validates the signature and renders the authenticated bytes as an unsandboxed Twig template, where Twig's map filter accepts a string callback and allows PHP system() to execute arbitrary operating-system commands as the web-server user. Exploitation requires an account using password authentication without active 2FA, the default request configuration, and availability of PHP system(). The issue is fixed in 4.18.6 and 5.10.13.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00605 49th percentileScored 2026-11-07
Fix Fixed cms (craftcms): 4.18.6, 5.10.13

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Craft CMScms4.8.0 to before 4.18.64.18.6Patch availableCNA
Craft CMScms5.0.0 to before 5.10.135.10.13Patch availableCNA
  • cms VendorCraft CMS Affected 4.8.0 to before 4.18.6 Fixed in 4.18.6 Patch available CNA
  • cms VendorCraft CMS Affected 5.0.0 to before 5.10.13 Fixed in 5.10.13 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:*——Craft CMS
  • cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions — — ·Craft CMS

Remediation

  • Fix · CNA cms (craftcms) Fixed in 4.18.6
  • Fix · CNA cms (craftcms) Fixed in 5.10.13

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    craftcms cms 5.10.13

    5 records Highest priority Priority MEDIUM 2 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2026-62449 Craft CMS 5.10.0 before 5.10.13 Authenticated Remote Code ExecutionPriority MEDIUM 40
    • TI-2026-62447 Craft CMS 5.0.0 before 5.10.13 Environment Secret Exposure via InstallerPriority LOW 36
    • TI-2026-62445 Craft CMS 5.0.0 before 5.10.13 Broken Access Control via nested-elements/reorderPriority LOW 24
    Show all 5 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-92592
  2. 2026-10-03 Alias added: GHSA-24f9-r76v-62p8
  3. 2026-10-19 EPSS moved to the 50th–90th percentile
  4. 2026-11-07 EPSS moved to the below the 50th percentile

References

Advisory 1

  • TI-2025-23503 Craft CMS Allows Remote Code Execution KEVCVSS 3.1CRITICAL 10.0
  • TI-2024-37138 RCE when PHP `register_argc_argv` config setting is enabled in craftcms/cms KEVCVSS 4.0CRITICAL 9.3
  • TI-2025-16994 Potential RCE with a compromised security key in craft/cms KEVCVSS 3.1HIGH 8.1
  • TI-2025-24595 Craft CMS stores user-provided content in session files KEVCVSS 4.0MEDIUM 6.9
  • TI-2023-22284 Craft CMS Remote Code Execution vulnerability CVSS 3.1CRITICAL 10.0
  • TI-2024-25171 Craft CMS up to v3.7.31 was discovered to contain a SQL injection vulnerability via the GraphQL API endpoint. CVSS 3.1CRITICAL 9.8
See all 203 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences