Authenticated script execution via attachment filename
Published Oct 23, 2025 · Updated Oct 23, 2025
Self-XSS in Liferay Portal and DXP Knowledge Base editing allows remote authenticated users to execute script through an attachment filename. The edit article page renders an uploaded attachment's crafted filename as active HTML or script instead of neutralizing it for the page context. Exploitation requires low-privileged authentication and active interaction by the same user who supplies and views the filename, bounding the effect to that user's browser session.
Summary
What happened
Self-XSS in Liferay Portal and DXP Knowledge Base editing allows remote authenticated users to execute script through an attachment filename. The edit article page renders an uploaded attachment's crafted filename as active HTML or script instead of neutralizing it for the page context. Exploitation requires low-privileged authentication and active interaction by the same user who supplies and views the filename, bounding the effect to that user's browser session.
The record
- CVE
- CVE-2025-62255
- Published
- Oct 23, 2025
- Updated
- Oct 23, 2025
- Vendor
- Liferay
- Product
- Liferay Portal
- Classifications
- CWE-79, CAPEC-63, T1059.007
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Oct 23, 2025CVE publishedPublication date reported by the CVE source.
- Oct 23, 2025Record 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=7.4.0 <=7.4.3.101
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
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Technologies
Your stack
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Your stack
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