What is the CVSS score of CVE-2026-26000?

CVE-2026-26000 has a CVSS 3.1 base score of 6.1 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N. EPSS exploitation probability: 0.0%.

Which versions of Xwiki are affected by CVE-2026-26000?

Organizations using XWiki Platform should be aware of moderate risk from CVE-2026-26000 rated CVSS 6.1. Exploitation could compromise the security of affected deployments.. A patch is available.

How to fix or mitigate CVE-2026-26000?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Vendor patch is available.

Xwiki CVE-2026-26000

MEDIUM

Improper Restriction of Rendered UI Layers or Frames (CWE-1021)

2026-02-12 security-advisories@github.com

GHSA-74rh-c5rh-88vg

XSS Xwiki

6.1

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

6.1 MEDIUM

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

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Lifecycle Timeline

Analysis Generated

Mar 12, 2026 - 22:02 vuln.today

Patch released

Feb 19, 2026 - 19:22 nvd

Patch available

CVE Published

Feb 12, 2026 - 21:16 nvd

MEDIUM 6.1

DescriptionGitHub Advisory

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.

AnalysisAI

Xwiki versions up to 17.9.0 is affected by improper restriction of rendered ui layers or frames (CVSS 6.1).

Technical ContextAI

This vulnerability (CWE-1021: Improper Restriction of Rendered UI Layers or Frames) affects Xwiki. 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.