BookStack Incorrect Access Control vulnerability

published 2024-07-09 2 y ago modified 2026-06-17 4 mo ago also GHSA-pj36-fcrg-327j , EUVD-2024-2395

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.6%; EPSS 0.6% chance of exploitation in 30 days, percentile 51%
public exploits: 0; none known

Incorrect access control in BookStack before v24.05.1 allows attackers to confirm existing system users and perform targeted notification email DoS via public facing forms.

Patch / fix

fixed in 2 links 2

packagist ssddanbrown/bookstack 24.05.1
bookstackapp bookstack v24.05.1

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-07-10)

Exploit prediction

0.65% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub	3.1	8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Affected packages

ecosystem	package	affected	fixed in
packagist	ssddanbrown/bookstack	<24.05.1	24.05.1

Affected products

bookstackapp bookstack

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation
CWE-284 Improper Access Control

References

Sources

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