PT-2025-18319 · Xwiki · Xwiki Contrib'S Syntax Markdown

Michael Hamann · Published 2025-04-30 · Updated 2025-08-26 · CVE-2025-46558

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions XWiki Contrib's Syntax Markdown versions 8.2 through 8.8

Description The issue allows any user to embed Javascript code using Markdown syntax, which can be executed on the browser of other users visiting the document or comment containing it. This compromises the confidentiality, integrity, and availability of the entire XWiki installation, especially if the code is executed by a user with administrative or programming rights.

Recommendations For versions 8.2 through 8.8, update to version 8.9 to resolve the issue.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-46558

GHSA-8G2J-RHFH-HQ3R

Affected Products

Xwiki Contrib'S Syntax Markdown

References · 13

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/46xxx/CVE-2025-46558.json · Exploit
• 🔥 https://jira.xwiki.org/browse/MARKDOWN-80 · Exploit
• https://github.com/xwiki-contrib/syntax-markdown/commit/d136472d6e8a47981a0ede420a9096f88ffa5035 · Patch
• https://github.com/xwiki-contrib/syntax-markdown/security/advisories/GHSA-8g2j-rhfh-hq3r · Patch
• https://osv.dev/vulnerability/GHSA-8g2j-rhfh-hq3r · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2025-46558 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2025-46558 · Security Note
• https://github.com/xwiki-contrib/syntax-markdown · Note
• https://t.me/cvedetector/24136 · Telegram Post
• https://twitter.com/CVEnew/status/1917652179596304561 · Twitter Post
• https://t.me/cvetracker/22749 · Telegram Post
• https://twitter.com/VulmonFeeds/status/1917760871658332246 · Twitter Post
• https://t.me/cveNotify/133515 · Telegram Post