Stored XSS via unescaped priority setting
Published Feb 18, 2026 · Updated Feb 18, 2026
Stored XSS in WP 404 Auto Redirect to Similar Post 1.0.5 and earlier allows remote authenticated users to inject scripts through admin settings. The settings handler stores an insufficiently sanitized priority value, and the settings page renders that value without output escaping. Administrator privileges and either WordPress multisite or disabled unfiltered_html are required; the script runs when a user opens an injected page.
Summary
What happened
Stored XSS in WP 404 Auto Redirect to Similar Post 1.0.5 and earlier allows remote authenticated users to inject scripts through admin settings. The settings handler stores an insufficiently sanitized priority value, and the settings page renders that value without output escaping. Administrator privileges and either WordPress multisite or disabled unfiltered_html are required; the script runs when a user opens an injected page.
The record
- CVE
- CVE-2025-12037
- Published
- Feb 18, 2026
- Updated
- Feb 18, 2026
- Vendor
- Konrad Chmielewski
- Product
- WP 404 Auto Redirect to Similar Post
- Classifications
- CWE-79, T1059.007
- Attack vector
- network
- Privileges
- admin
Timeline
How it unfolded
- Feb 18, 2026CVE publishedPublication date reported by the CVE source.
- Feb 18, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=* <=1.0.5
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
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo