Incorrect access control in BookStack before v24.05.1 allows attackers to confirm…
Priority MEDIUM 40CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Cross-site scripting, Security bypass
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-79 and CWE-284.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00646 51st percentileScored 2026-11-07
Fix Fixed ssddanbrown/bookstack (Packagist): 24.05.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | ssddanbrown/bookstack (Packagist) | before 24.05.1 | 24.05.1 | Patch available | GHSA-pj36-fcrg-327j |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- ssddanbrown/bookstack (Packagist) Vendor— Affected before 24.05.1 Fixed in 24.05.1 Patch available GHSA-pj36-fcrg-327j
CPE names CISA-ADP · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:bookstackapp:bookstack:-:*:*:*:*:*:*:* | not specified by CISA-ADP | — | bookstackapp |
- cpe:2.3:a:bookstackapp:bookstack:-:*:*:*:*:*:*:* Versions not specified by CISA-ADP — ·bookstackapp
Remediation
- Fix · GHSA-pj36-fcrg-327j ssddanbrown/bookstack (Packagist) Fixed in 24.05.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2024-36676
- 2026-10-03 Alias added: GHSA-pj36-fcrg-327j
- 2026-10-20 EPSS moved to the 50th–90th percentile
References
Other 6
- https://github.com/BookStackApp/BookStack/issues/4993
- https://www.bookstackapp.com/blog/bookstack-release-v24-05-1/
- https://github.com/BookStackApp/BookStack/releases/tag/v24.05.1
- https://github.com/BookStackApp/BookStack/commit/69af9e0dbdefd8c6c951e8afbe2bba141d454beb
- https://github.com/BookStackApp/BookStack
- https://www.bookstackapp.com/blog/bookstack-release-v24-05-1
Sources
- CVE-2024-36676 · CVE Program
- CVE-2024-36676 · NVD
- FIRST EPSS
- GHSA-pj36-fcrg-327j · GitHub Advisory Database · CC BY 4.0
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