CVE-2026-97641 json
Relevanssi <= 4.28.3 - Unauthenticated Stored Cross-Site Scripting via Comment Content
published last mo. modified last mo. also EUVD-2026-91244
- cvss
- 7.2
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 15%
- public exploits
- 0
- none known
Summary
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content in all versions up to, and including, 4.28.3 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when the administrator has configured a non-empty value for the "Allowable tags in excerpts" setting, such as the default example value of <p><a><strong>, as the prefix-matching regex must have an allowable tag whose name is a prefix of the injected tag name.
Patch / fix
Is CVE-2026-97641 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- last mo.
Exploit prediction
0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.2 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N |
Affected products
- comesio Relevanssi – A Better Search
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
- Technology feeds
References
- github.com /msaari/relevanssi/commit/3dddec3416fbda298e18649127f31557398d10b0
- wordfence.com /threat-intel/vulnerabilities/id/47751ff1-2f22-4335-8e75-7ff1b6214426?source=cve
- plugins.trac.wordpress.org /browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L883
- plugins.trac.wordpress.org /browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L421
- plugins.trac.wordpress.org /browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L216
- plugins.trac.wordpress.org /browser/relevanssi/tags/4.28.3/lib/admin-ajax.php#L492
- plugins.trac.wordpress.org /browser/relevanssi/tags/4.28.3/lib/indexing.php#L1067
Sources
- CVE List CVE-2026-97641
- NVD CVE-2026-97641
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