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CVE-2022-40690

21
FAUCET Score

CVE-2022-40690 is a cross-site scripting (XSS) vulnerability affecting BookStack versions prior to v22.09, allowing an authenticated attacker to inject malicious scripts. Rated as MEDIUM severity (CVSS 5.4), it requires user interaction and low privileges but can lead to limited confidentiality and integrity impacts. There is no evidence of active exploitation, public exploit code, or significant community discussion, indicating a low current threat landscape.

Impacted Technologies

VendorProductVersion(s)CPE
< 22.09CPE matchmatch criteria
cpe:2.3:a:bookstackapp:bookstack:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.4MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.3
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.69%
Probability of exploitation in next 30 days
EPSS Percentile
49.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0069 is in the 83rd percentile among its peer group of 15,239 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

jvn.jp / en/jp/JVN78862034/index.html
Release NotesThird Party Advisory
bookstackapp.com / blog/bookstack-release-v22-09
Release NotesVendor Advisory
bookstackapp.com / docs/admin/security
Vendor Advisory