CVE-2026-116522
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
74/100
Published: 2026-10-31
Modified: 2026-10-31
First seen: 2026-10-31
Status: active
Attack Surface
Network
Low Complexity
No Auth
No Interaction
Scope Change
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
None
UI:
None
S:
Changed
C:
Low
I:
Low
A:
None
Description
The Relevanssi – A Better Search plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'comment' parameter in all versions up to, and including, 4.28.5 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 requires the site to have both the comment indexing and comment highlighting options enabled, and the payload only fires when a visitor reaches a singular page via a Relevanssi search-result permalink carrying the highlight query parameter.
Weakness Classification (1)
Affected Software (1)
| Vendor | Product | Version |
|---|---|---|
| comesio | Relevanssi – A Better Search | 0 |