Stored XSS via unescaped forwarded IP logs
Published Feb 19, 2026 · Updated Feb 19, 2026
Stored XSS in yehudah xmlrpc attacks blocker 1.0 and earlier allows remote attackers to execute scripts via X-Forwarded-For. The plugin records the untrusted header as a client IP in its debug log and prints the stored entry on the administrator log page without output escaping. No authentication is required to plant the payload, but an administrator must open the debug log page; script execution occurs in that administrator's browser context.
Summary
What happened
Stored XSS in yehudah xmlrpc attacks blocker 1.0 and earlier allows remote attackers to execute scripts via X-Forwarded-For. The plugin records the untrusted header as a client IP in its debug log and prints the stored entry on the administrator log page without output escaping. No authentication is required to plant the payload, but an administrator must open the debug log page; script execution occurs in that administrator's browser context.
The record
- CVE
- CVE-2026-2502
- Published
- Feb 19, 2026
- Updated
- Feb 19, 2026
- Vendor
- yehudah
- Product
- xmlrpc attacks blocker
- Classifications
- CWE-79, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 19, 2026CVE publishedPublication date reported by the CVE source.
- Feb 19, 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?
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- Affected versionversion=* <=1.0
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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