Craft CMS 5.0.0-RC1 before 5.10.11 Stored XSS via site name
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- None · None · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Craft CMS versions from 5.0.0-RC1 before 5.10.11 contain a stored cross-site scripting vulnerability in the site name field that fails to sanitize input. Administrators can inject arbitrary JavaScript payloads in the site name that execute when other users view the control panel settings pages.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- 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
- Fix · CNA cms (craftcms) Fixed in 5.10.11
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
craftcms cms 5.10.11
10 records Highest priority Priority MEDIUM 5 MEDIUM, 5 LOW
Other records, highest priority first
- TI-2026-58292 Craft CMS before 5.10.11 Authentication Bypass via Admin Flag InheritancePriority MEDIUM 48
- TI-2026-58298 Craft CMS 5.0.0-RC1 before 5.10.11 Authentication Bypass via administrateUsersPriority MEDIUM 40
- TI-2026-58293 Craft CMS 5.0.0-RC1 before 5.10.11 GraphQL Entry Mutation Site Scope BypassPriority MEDIUM 40
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84793
- 2026-10-03 Alias added: GHSA-wf9j-59pf-vfvj
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-2026-84793 · CVE Program
- CVE-2026-84793 · NVD
- FIRST EPSS
- GHSA-wf9j-59pf-vfvj · 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