What is CVE-2026-25491?

CVE-2026-25491 is a medium-severity vulnerability in Craftcms Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-02-09.

How severe is CVE-2026-25491?

Medium severity. CVSS v3 base score is 4.8 out of 10.

XSS in Craftcms Cms

CVE-2026-25491

Craft is a platform for creating digital experiences. From 5.0.0-RC1 to 5.8.21, Craft has a stored XSS via Entry Type names. The name is not sanitized when displayed in the Entry Types list. This vulnerability is fixed in 5.8.22.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.003 (22.6th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N.

Affected products

Craftcms Cms — versions >= 5.0.0-RC1, < 5.8.22
Craftcms Craft_cms

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Patch, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)
security-advisories@github.com (Product, x_refsource_MISC, Release Notes)

Frequently asked questions

What is CVE-2026-25491?: CVE-2026-25491 is a medium-severity vulnerability in Craftcms Cms, classified under Cross-site Scripting. CVSS score: 4.8/10. Published 2026-02-09.
How severe is CVE-2026-25491?: Medium severity. CVSS v3 base score is 4.8 out of 10.