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Not in CISA KEV
LOW severity

GHSA-wc7v-77jr-5c3m

LOWFix: bookstackapp/bookstack@88e6f93

GHSA-wc7v-77jr-5c3m is a low-severity (CVSS 3.1) Cross-Site Request Forgery (CSRF) vulnerability in ssddanbrown/bookstack. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether GHSA-wc7v-77jr-5c3m is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

bookstack is vulnerable to Cross-Site Request Forgery (CSRF)

Also known asCVE-2021-3944
Published
Dec 3, 2021
Updated
Nov 8, 2023
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 8, 2023 · OSV.dev, NVD, FIRST.org (EPSS)

Real-World Exposure

1 pkg affected
🐘ssddanbrown/bookstack

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects Packagist packages — download data is not available via public APIs for these ecosystems.

Description

bookstack is vulnerable to Cross-Site Request Forgery (CSRF)

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistssddanbrown/bookstackall versions21.11
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

Detection & mitigation playbook

Open-source dependency
  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ssddanbrown/bookstack. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.

  2. Fix

    Update ssddanbrown/bookstack to 21.11 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-wc7v-77jr-5c3m is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

  4. How O3 protects you

    O3 pinpoints whether GHSA-wc7v-77jr-5c3m is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Tailored to GHSA-wc7v-77jr-5c3m. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

bookstack is vulnerable to Cross-Site Request Forgery (CSRF)
O3 Security · Impact-Aware SCA

Is GHSA-wc7v-77jr-5c3m in your dependencies?

O3 detects GHSA-wc7v-77jr-5c3m across Packagist dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

GHSA-wc7v-77jr-5c3m: ssddanbrown/booksta… | O3 Security