SQL injection in Craft CMS GraphQL lets attackers read database
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- SQL injection
- Confidentiality · integrity · availability
- High · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-89.
Summary
Craft CMS 4.0.0 before 4.18.9 and 5.0.0 before 5.11.2 is affected. Arguments on GraphQL eager-loadable nodes that are absent from the public schema are copied into query criteria without cleansing, which causes SQL injection (CWE-89). An unauthenticated remote attacker can inject SQL expressions and read arbitrary database content, including password hashes and session tokens.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
Craft CMS 4.0.0 before 4.18.9 and 5.0.0 before 5.11.2 contains an SQL injection vulnerability in GraphQL eager-loading: arguments on eager-loadable nodes absent from the public schema are copied into EagerLoadPlan criteria without cleansing. Unauthenticated attackers can supply a parenthesized select argument to inject SQL expressions and read arbitrary database content, including password hashes and session tokens.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Craft CMS to 4.18.9 on the 4.x line and to 5.11.2 on the 5.x line.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA cms (craftcms) Fixed in 4.18.9
- Fix · CNA cms (craftcms) Fixed in 5.11.2
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
craftcms cms 5.11.2
4 records Highest priority Priority MEDIUM 2 MEDIUM, 2 LOW
Other records, highest priority first
- TI-2026-85950 SQL injection in Craft CMS element search endpointPriority MEDIUM 41
- TI-2026-85952 Privilege escalation in Craft CMS lets users make accounts adminsPriority LOW 37
- TI-2026-85951 Blind SQL injection in Craft CMS getNext and getPrev criteriaPriority LOW 31
- Release ·
craftcms cms 4.18.9
3 records Highest priority Priority MEDIUM 2 MEDIUM, 1 LOW
Other records, highest priority first
- TI-2026-85950 SQL injection in Craft CMS element search endpointPriority MEDIUM 41
- TI-2026-85951 Blind SQL injection in Craft CMS getNext and getPrev criteriaPriority LOW 31
Timeline
- 2026-11-06 Threatist record created from CVE-2026-123491
- 2026-11-06 Alias added: GHSA-6534-m2vq-3r2h
- 2026-11-06 CISA SSVC decision points changed
References
More Craft CMS vulnerabilities
- 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
Sources
- CVE-2026-123491 · CVE Program
- CVE-2026-123491 · NVD
- FIRST EPSS
- GHSA-6534-m2vq-3r2h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences