What’s Vulnerable › Vulnerabilities

CVE-2026-25496: Craft has a stored XSS in Number Prefix & Suffix Fields

• Severity: medium (CVSS 4.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-02-09 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• craftcms cms: from 4.0.0 (excl.) before 4.16.18; from 5.0.0 (excl.) before 5.8.22; 4.0.0, 4.0.0-rc1, 4.0.0-rc2, 4.0.0-rc3, 5.0.0, 5.0.0-rc1 — fixed in 4.16.18, 5.8.22

How to fix

Upgrade to a fixed version: craftcms cms 4.16.18, 5.8.22. Check the vendor advisory for mitigations.

References

• https://github.com/craftcms/cms/commit/cb5fb0e979e72f315c9178fc031883d49527f513
• https://github.com/craftcms/cms/releases/tag/5.8.22
• https://github.com/craftcms/cms/security/advisories/GHSA-9f5h-mmq6-2x78

Get alerted when CVE-2026-25496 or the next vulnerability affects your stack