GHSA-xmgg-fx9p-prq6 is a high-severity (CVSS 7.5) Cross-Site Request Forgery (CSRF) vulnerability in nodebb. 2 public exploit or proof-of-concept references are indexed, so weaponization risk is real. A fix is available for nodebb — see the affected versions and patch details below.
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
- A successful exploit gives an attacker total control of the affected component, not partial access.
Exploitation and automatability from CISA’s SSVC triage for GHSA-xmgg-fx9p-prq6.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
Where this sits among everything scored
Real-World Exposure
How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.
nodebbnpmDescription
This is a historical security advisory, pertaining to a vulnerability that was reported, patched, and published in 2021. It is listed here for completeness and for CVE tracking purposes.
Impact
Due to an unnecessarily strict conditional in the code handling the first step of the SSO process, the pre-existing logic that added (and later checked) a nonce was inadvertently rendered opt-in instead of opt-out.
This re-exposed a vulnerability in that a specially crafted MITM attack could theoretically take over another user account during the single sign-on process.
Patches
The issue has been fully patched as of v1.17.2.
The patch commit can be found at https://github.com/NodeBB/NodeBB/commit/a2400f6baff44cb2996487bcd0cc6e2acc74b3d4
Workarounds
Site maintainers can cherry-pick https://github.com/NodeBB/NodeBB/commit/a2400f6baff44cb2996487bcd0cc6e2acc74b3d4 into their codebase to patch the exploit.
References
For more information
If you have any questions or comments about this advisory:
- Discuss it on our community forum
- Email us at [email protected]
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 📦npm | nodebb | all versions | 1.17.2npm install nodebb@1.17.2 |
Affected Products
nodebbnodebbResearch 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 dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for nodebb, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update nodebb to 1.17.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xmgg-fx9p-prq6 is resolved across your whole dependency graph.
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.
Frequently Asked Questions
Is GHSA-xmgg-fx9p-prq6 in your dependencies?
Find it across npm, including transitive dependencies.