Craft has a stored XSS in Number Prefix & Suffix Fields
Priority LOW 22CWE-79Published · Updated
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
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-79.
Summary
Craft is a platform for creating digital experiences. In Craft versions 4.0.0-RC1 through 4.16.17 and 5.0.0-RC1 through 5.8.21, a stored XSS vulnerability exists in the Number field type settings. The Prefix and Suffix fields are rendered using the |md|raw Twig filter without proper escaping, allowing script execution when the Number field is displayed on users' profiles. This issue is patched in versions 4.16.18 and 5.8.22.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0041 35th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed cms (craftcms): 5.8.22, 4.16.18craftcms/cms (Packagist): 5.8.22, 4.16.18
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Craft CMS | cms | 5.0.0-RC1 to before 5.8.22; 4.0.0-RC1 to before 4.16.18 | 5.8.22, 4.16.18 | Patch available | CNA |
| — | craftcms/cms (Packagist) | 5.0.0-RC1 to before 5.8.22 | 5.8.22 | Patch available | GHSA-9f5h-mmq6-2x78 |
| — | craftcms/cms (Packagist) | 4.0.0-RC1 to before 4.16.18 | 4.16.18 | Patch available | GHSA-9f5h-mmq6-2x78 |
- cms VendorCraft CMS Affected 5.0.0-RC1 to before 5.8.22; 4.0.0-RC1 to before 4.16.18 Fixed in 5.8.22, 4.16.18 Patch available CNA
- craftcms/cms (Packagist) Vendor— Affected 5.0.0-RC1 to before 5.8.22 Fixed in 5.8.22 Patch available GHSA-9f5h-mmq6-2x78
- craftcms/cms (Packagist) Vendor— Affected 4.0.0-RC1 to before 4.16.18 Fixed in 4.16.18 Patch available GHSA-9f5h-mmq6-2x78
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* | after 4.0.0, before 4.16.18; after 5.0.0, before 5.8.22 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* | 4.0.0 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* | 4.0.0 rc1 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* | 4.0.0 rc2 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:* | 4.0.0 rc3 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:* | 5.0.0 | Vulnerable | Craft CMS |
| cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:* | 5.0.0 rc1 | Vulnerable | Craft CMS |
- cpe:2.3:a:craftcms:craft_cms:*:*:*:*:*:*:*:* Versions after 4.0.0, before 4.16.18; after 5.0.0, before 5.8.22 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:4.0.0:-:*:*:*:*:*:* Versions 4.0.0 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:4.0.0:rc1:*:*:*:*:*:* Versions 4.0.0 rc1 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:4.0.0:rc2:*:*:*:*:*:* Versions 4.0.0 rc2 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:4.0.0:rc3:*:*:*:*:*:* Versions 4.0.0 rc3 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:5.0.0:-:*:*:*:*:*:* Versions 5.0.0 Vulnerable ·Craft CMS
- cpe:2.3:a:craftcms:craft_cms:5.0.0:rc1:*:*:*:*:*:* Versions 5.0.0 rc1 Vulnerable ·Craft CMS
Remediation
- Fix · CNA cms (craftcms) Fixed in 5.8.22, 4.16.18
- Fix · GHSA-9f5h-mmq6-2x78 craftcms/cms (Packagist) Fixed in 5.8.22 Advisory →
- Fix · GHSA-9f5h-mmq6-2x78 craftcms/cms (Packagist) Fixed in 4.16.18 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-25496
- 2026-10-03 Alias added: GHSA-9f5h-mmq6-2x78
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-2026-25496 · CVE Program
- CVE-2026-25496 · NVD
- FIRST EPSS
- GHSA-9f5h-mmq6-2x78 · GitHub Advisory Database · CC BY 4.0
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