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TI-2026-54526 Aliases CVE-2026-78416GHSA-4ghj-75g5-h9pf

Authenticated RCE via `condition.config` JSON cleanse bypass

Priority MEDIUM 42CWE-915Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-915.

Summary

Craft CMS versions from 4.0.0-RC1 before 4.18.2 and from 5.0.0-RC1 before 5.10.6 contain an authenticated remote code execution vulnerability in control panel element-search condition handling. A JSON cleanse bypass in condition.config allows Yii behavior/event configuration keys to be interpreted after decoding, enabling command execution as the PHP/web user.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0102 63rd percentileScored 2026-11-07
Fix Fixed cms (craftcms): 4.18.2, 5.10.6

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 CMScms4.0.0-RC1 to before 4.18.2; 5.0.0-RC1 to before 5.10.64.18.2, 5.10.6Patch availableCNA
  • cms VendorCraft CMS Affected 4.0.0-RC1 to before 4.18.2; 5.0.0-RC1 to before 5.10.6 Fixed in 4.18.2, 5.10.6 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 4.18.2, 5.10.6

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-78416
  2. 2026-10-03 Alias added: GHSA-4ghj-75g5-h9pf

References

Advisory 1

Other 2

  • 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