WordPress Booknetic plugin < 5.10.3 - Broken Authentication vulnerability

published 2026-06-17 4 mo ago modified 2026-10-29 11 d ago also EUVD-2026-37666

cvss: 8.1; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 27%
public exploits: 0; none known

Authentication Bypass Using an Alternate Path or Channel vulnerability in Booknetic Booknetic booknetic allows Authentication Abuse.This issue affects Booknetic: from n/a before 5.10.3.

Patch / fix

fixed in 1

Booknetic Booknetic 5.10.3

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: total
Assessed: 4 mo ago (2026-06-17)

Exploit prediction

0.34% chance of exploitation in the next 30 days, higher than 27% 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:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Booknetic Booknetic

Classification

Weakness

CWE-288 Authentication Bypass Using an Alternate Path or Channel

Technology feeds

WordPress rss critical rss

References

patchstack.com /database/wordpress/plugin/booknetic/vulnerability/wordpress-booknetic-plugin-4-8-5-account-takeover-vulnerabi
vdb-entry

Sources

CVE List CVE-2026-25439
NVD CVE-2026-25439

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.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary