CVE-2026-103426 Relevanssi Premium WordPress - Stored XSS

Relevanssi Premium WordPress plugin <= 2.31.4 contains a stored cross-site scripting caused by insufficient input sanitization and output escaping in the '_rt' parameter, letting unauthenticated attackers inject scripts executed on user page access, exploit requires click-tracking and logging enabled.

CVSS base score 7.2 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.23% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Stored XSS
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Published
2 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version beyond 2.31.4.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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