Reflected XSS via unsanitized search referral link
Published Mar 16, 2026 · Updated Mar 16, 2026
Reflected XSS in FBS Flexmls IDX 3.15.9 and earlier allows remote attackers to execute scripts via a crafted search referral link. The plugin fails to validate and sanitize the referral URL before incorporating it into generated page content. Exploitation requires a user to follow the crafted link; the resulting script runs in that user's browser with access to read or alter data available to the affected page.
Summary
What happened
Reflected XSS in FBS Flexmls IDX 3.15.9 and earlier allows remote attackers to execute scripts via a crafted search referral link. The plugin fails to validate and sanitize the referral URL before incorporating it into generated page content. Exploitation requires a user to follow the crafted link; the resulting script runs in that user's browser with access to read or alter data available to the affected page.
The record
- CVE
- CVE-2026-25369
- Published
- Mar 16, 2026
- Updated
- Mar 16, 2026
- Vendor
- FBS
- Product
- Flexmls IDX WordPress Plugin
- Classifications
- CWE-79, CAPEC-591, T1203
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 16, 2026CVE publishedPublication date reported by the CVE source.
- Mar 16, 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=n/a <=3.15.9 changes=[{"at":"3.15.10","status":"unaffected"}]
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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