CVE-2026-26000

Name: CVE-2026-26000
Creator: NVD / NIST
Published: 2026-02-12T21:16:02.99+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.3/10EPSS 0.28%

Last modified Jun 17, 2026

CVE-2026-26000 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.9.0, 17.4.6, and 16.10.13, it's possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. EPSS estimates a 0.28% chance of exploitation in the next 30 days.

Description

XWiki Platform is a generic wiki platform offering runtime services for applications built on top of it. Prior to 17.9.0, 17.4.6, and 16.10.13, it's possible using comments to inject CSS that would transform the full wiki in a link area leading to a malicious page. This vulnerability is fixed in 17.9.0, 17.4.6, and 16.10.13.

Metrics

CVSS 3.1

6.1/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS 4.0

5.3/10

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.28%

19.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-1021

Affected Software

Vendor	Product	Versions
Xwiki	Xwiki	< 16.10.13
Xwiki	Xwiki	>= 17.0.0, < 17.4.6
Xwiki	Xwiki	>= 17.5.0, < 17.9.0

References

https://github.com/xwiki/xwiki-platform/releases/tag/xwiki-platform-17.4.6Product, Release Notes
https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-74rh-c5rh-88vgPatch, Vendor Advisory

Timeline

Published: Feb 12, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-26000?

How severe is CVE-2026-26000?

CVE-2026-26000 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.28% probability of exploitation in the next 30 days.

How do I fix CVE-2026-26000?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-26000?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST