Path Traversal in nodebb (CVE-2021-43788)
Summary
Path traversal in nodebb (CVE-2021-43788). Risk of unauthorized operations or information disclosure. Exploitable via c8b2fc46dc698db687379106b3f01c71b80f495f. Mitigation: upgrade to 1.18.5 or later.
Original description
The description as published by the source.
Impact
Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected languages/ directory.
Patches
The vulnerability has been patched as of v1.18.5.
Workarounds
Cherry-pick commit hash c8b2fc46dc698db687379106b3f01c71b80f495f to receive this patch in lieu of a full upgrade.
For more information
If you have any questions or comments about this advisory:
- Email us at security@nodebb.org
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2021-43788 has been found in nodebb.
Attackers can target a specific entry point like c8b2fc46dc698db687379106b3f01c71b80f495f over the network to misuse the product.
Risk of unauthorized operations or information disclosure.
What to do: upgrade nodebb to 1.18.5 or later.
If unsure, ask your IT team or search "nodebb CVE-2021-43788" on the vendor's site.
CVE-2021-43788 (nodebb) — CWE-22
Attack vector: remote (network-reachable) / no user interaction
Attack surface: c8b2fc46dc698db687379106b3f01c71b80f495f
Patched: 1.18.5 — apply immediately
Workaround: Cherry-pick commit hash c8b2fc46dc698db687379106b3f01c71b80f495f to receive this patch in lieu of a full upgrade.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Path traversal (CWE-22) exists in nodebb. Attackers reach the vulnerable code path via c8b2fc46dc698db687379106b3f01c71b80f495f.
Check the vendor advisory for the affected versions of nodebb. Attack surface: c8b2fc46dc698db687379106b3f01c71b80f495f.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.18.5.
Workaround: Cherry-pick commit hash c8b2fc46dc698db687379106b3f01c71b80f495f to receive this patch in lieu of a full upgrade.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'nodebb' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'nodebb' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
nodebbを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply temporary workaround mitigate
Cherry-pick commit hash `c8b2fc46dc698db687379106b3f01c71b80f495f` to receive this patch in lieu of a full upgrade.パッチが適用されるまでの応急処置として、Cherry-pick commit hash
c8b2fc46dc698db687379106b3f01c71b80f495fto receive this patch in lieu of a full upgrade. を実施。回避策の副作用 (機能低下) を確認した上で。 -
3Apply patch patch
Upgrade nodebb to 1.18.5ステージング環境で 1.18.5 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
4Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory nvd.nist.gov
- package github.com
- web github.com
- web github.com
- web blog.sonarsource.com
- web github.com