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CVE-2021-4119
Improper Access Control in bookstackapp/bookstack
Medium5.3EPSS 26.9%
- Published
- Updated
- Reserved
- Assigned by
- @huntrdev
Description
bookstack is vulnerable to Improper Access Control
Timeline
ID reserved
By @huntrdev
- 1 day later
· 1 day later
Published
- 3 years later
· 3 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| @huntrdevCNA (assigner) | 3.0 | Medium5.3 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 26.9% · top 2.0% of all CVEs (7 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Weakness
Affected products
bookstackapp · bookstackapp/bookstack
- affected unspecified – < 21.11.3
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Packagistssddanbrown/bookstackGHSA-9c5c-5j4h-8q2c (opens in a new tab)
References (2)
- https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fca (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99 (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-9c5c-5j4h-8q2c (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2021-4119)Record last updated .