Stored XSS via unescaped blog post title
Published Mar 4, 2026 · Updated Mar 4, 2026
Stored XSS in XWiki Blog Application 9.15 through 9.15.6 allows remote authenticated users to run JavaScript in viewers' browsers. The displayEntryTitle macro escapes the post title for XWiki rendering syntax but places it in a global HTML context without HTML escaping. Blog post creation or edit rights are required, and another user, including an administrator, must view the malicious post; the script then executes with access to that viewer's session context.
Summary
What happened
Stored XSS in XWiki Blog Application 9.15 through 9.15.6 allows remote authenticated users to run JavaScript in viewers' browsers. The displayEntryTitle macro escapes the post title for XWiki rendering syntax but places it in a global HTML context without HTML escaping. Blog post creation or edit rights are required, and another user, including an administrator, must view the malicious post; the script then executes with access to that viewer's session context.
The record
- CVE
- CVE-2025-66024
- Published
- Mar 4, 2026
- Updated
- Mar 4, 2026
- Vendor
- XWiki Contrib
- Product
- XWiki Blog Application
- Classifications
- CWE-79, T1539
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 4, 2026CVE publishedPublication date reported by the CVE source.
- Mar 4, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 9.15.7
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory reproduction payloadproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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