CVE-2026-86798 HootBoard WordPress plugin - Stored XSS

HootBoard WordPress plugin through 3.1.4 contains a stored XSS vulnerability caused by lack of authorization checks and escaping on some REST endpoints, letting unauthenticated attackers execute arbitrary scripts in visitors' browsers.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.34% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Stored XSS
Impact
Client Script Exec
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
11 October 2026
Updated
15 October 2026
Weakness
CWE-79

Vendor fix

Update to the latest version beyond 3.1.4.

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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