Medium severity4.3NVD Advisory· Published Nov 30, 2021· Updated Jun 17, 2026
CVE-2021-4026
CVE-2021-4026
Description
bookstack is vulnerable to Improper Access Control
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
ssddanbrown/bookstackPackagist | < 21.11.2 | 21.11.2 |
Affected products
3- Range: unspecified
Patches
Vulnerability mechanics
References
5- github.com/bookstackapp/bookstack/commit/b4fa82e3298a15443ca40bff205b7a16a1031d92nvdPatchThird Party AdvisoryWEB
- huntr.dev/bounties/c6dfa80d-43e6-4b49-95af-cc031bb66b1dnvdExploitThird Party AdvisoryWEB
- github.com/advisories/GHSA-jm6p-wfjg-xm7xghsaADVISORY
- nvd.nist.gov/vuln/detail/CVE-2021-4026ghsaADVISORY
- github.com/BookStackApp/BookStack/releases/tag/v21.11.2ghsaWEB
News mentions
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