CVE-2026-86798High· 8.8▾ Twilight

The HootBoard WordPress plugin through 3.1.4 does not perform any authorisation check on some of its REST endpoints, and does not escape the values stored through them before outputting them in a public page, allowing unauthenticated us…

▾ Twilight zone — High severity, or a signal on a lesser flaw

Depth score48/ 100 · Moderate

impact 48.4 · likelihood 0.1 · exploitation 0

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Proof of concept

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Published

Oct 11, 2026

Updated

Oct 13, 2026

CVSS

8.8

Vendor

—

Product

HootBoard

CWE

CWE-79

Depth score

48 · Moderate

EPSS

0.34% · p27

Platforms

—

Source

NVD

Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

decided 2026-10-11

Exploitation: none
Automatable: no
Technical impact: total

Stakeholder-Specific Vulnerability Categorization from CISA's ADP record at CVE.org: whether exploitation is observed, whether an attack can be automated, and how much of the system is at stake.

EPSS history

Exploit-prediction probability, daily snapshots since Oct 11.

0.2% → 0.3%▲ 0.2%

Timeline

Disclosure to exploitation, from the record and what we observed since indexing it.

6 events · 2 days

Oct 11, 2026Published
Disclosed via NVD
Oct 11, 2026EPSS first tracked
0.2%
Oct 11, 2026CVSS changed
— → 8.8
Oct 11, 2026Severity changed
none → high
Oct 13, 2026Record revised
Last analysed / modified upstream
Oct 13, 2026EPSS peak
0.2% → 0.3%

CWE-79 #nvd #cve.org

Affected

HootBoard <= 3.1.4

Full technical detail▾

Overview

The HootBoard WordPress plugin through 3.1.4 does not perform any authorisation check on some of its REST endpoints, and does not escape the values stored through them before outputting them in a public page, allowing unauthenticated users to inject arbitrary web scripts that will execute in the browser of anyone visiting that page, including administrators.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

References

[email protected] — https://wpscan.com/vulnerability/a0cfbbb7-4cc5-4ec0-b420-e249204fcd46/

Change history

Field changes observed since this record was first indexed.

Oct 11, 2026CVSS — → 8.8
Oct 11, 2026Severity none → high

Related vulnerabilities

Connected by shared product, vendor, weakness, or advisory.

#nvd#cve.org

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