WordPress FluentBoards plugin <= 1.91.2 - Insecure Direct Object References (IDOR) vulnerability

published 2026-04-15 6 mo ago modified 2026-10-26 13 d ago also EUVD-2026-22907

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 6%
public exploits: 0; none known

Authorization Bypass Through User-Controlled Key vulnerability in Mahmudul Hasan Arif FluentBoards fluent-boards allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects FluentBoards: from n/a through <= 1.91.2.

Patch / fix

fixed in 1

Mahmudul Hasan Arif FluentBoards 1.91.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 6 mo ago (2026-04-15)

Exploit prediction

0.17% chance of exploitation in the next 30 days, higher than 6% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
CISA ADP	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L
CNA	3.1	8.1	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:L

Affected products

Mahmudul Hasan Arif FluentBoards

Classification

Weakness

CWE-639 Authorization Bypass Through User-Controlled Key

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/Wordpress/Plugin/fluent-boards/vulnerability/wordpress-fluentboards-plugin-1-91-2-insecure-direct-ob
vdb-entry

Sources

CVE List CVE-2026-40784
NVD CVE-2026-40784

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary