CVE-2026-97641Relevanssi <= 4.28.3 - Unauthenticated Stored Cross-Site Scripting via Comment Content
Updated under an hour ago ()
Does this affect you?
It affects comesio Relevanssi – A Better Search. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.24%, higher than 14% of scored CVEs.
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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.
- CVSS
- 7.2 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.24% (percentile 14)
- Assigned by
- Wordfence
- NVD analysis
- Deferred
- Record last updated
- Oct 3, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
comesio Relevanssi – A Better Search comesio:relevanssi_a_better_search (from the name) | through 4.28.3 | CNA record |
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/47751ff1-2f22-4335-8e75-7ff1b6214426?source=cve
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L883
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L421
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/excerpts-highlights.php#L216
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/admin-ajax.php#L492
- https://plugins.trac.wordpress.org/browser/relevanssi/tags/4.28.3/lib/indexing.php#L1067
- https://github.com/msaari/relevanssi/commit/3dddec3416fbda298e18649127f31557398d10b0
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.