CVE-2021-3944 json
Cross-Site Request Forgery (CSRF) in bookstackapp/bookstack
published 2021-12-02 4 y ago modified 2026-06-17 4 mo ago also GHSA-wc7v-77jr-5c3m , EUVD-2021-2601
- cvss
- 3.1
- version 3.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
bookstack is vulnerable to Cross-Site Request Forgery (CSRF)
Patch / fix
- packagist ssddanbrown/bookstack 21.11
- bookstackapp bookstackapp/bookstack 21.11
Exploit prediction
0.64% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- huntr.dev https://huntr.dev/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.0 | 3.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
| NVD | 3.1 | 6.8 | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:H/Au:N/C:P/I:P/A:N |
| GitHub | 3.0 | 3.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | ssddanbrown/bookstack | <21.11 |
21.11 |
Affected products
- bookstackapp bookstackapp/bookstack
Classification
- Weakness
-
- CWE-352 Cross-Site Request Forgery
References
-
github.com
/bookstackapp/bookstack/commit/88e6f93abf54192a69cc8080e0dc6516ee68ccbb
web, patch, third-party-advisory
-
huntr.dev
/bounties/65551490-5ade-49aa-8b8d-274c2ca9fdc9
web, exploit, patch, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-3944
advisory
-
github.com
/bookstackapp/bookstack
package
Sources
- CVE List CVE-2021-3944
- GitHub Advisory GHSA-wc7v-77jr-5c3m
- NVD CVE-2021-3944
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.