What’s Vulnerable › Vulnerabilities

CVE-2022-40690

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-10-24 · updated 2026-06-17
• Weakness: CWE-79

Description

Cross-site scripting vulnerability in BookStack versions prior to v22.09 allows a remote authenticated attacker to inject an arbitrary script.

Affected products

• bookstackapp/bookstack: before 22.09 — fixed in 22.09

How to fix

Upgrade to a fixed version: bookstackapp/bookstack 22.09. Check the vendor advisory for mitigations.

References

• https://jvn.jp/en/jp/JVN78862034/index.html
• https://www.bookstackapp.com/blog/bookstack-release-v22-09/
• https://www.bookstackapp.com/docs/admin/security/#using-bookstack-content-externally
• https://jvn.jp/en/jp/JVN78862034/index.html
• https://www.bookstackapp.com/blog/bookstack-release-v22-09/
• https://www.bookstackapp.com/docs/admin/security/#using-bookstack-content-externally

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