Path Traversal in Nodebb
CVE-2021-43788
Nodebb is an open source Node.js based forum software. Prior to v1.18.5, a path traversal vulnerability was present that allowed users to access JSON files outside of the expected `languages/` directory. The vulnerability has been patched as of v1.18.5. Users are advised to upgrade as soon as possible.
Vulnerability class: Path Traversal (Directory Traversal)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.258 (97.9th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 97.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.258 · newest: 0.258 · change: 0.000
Affected products
- Nodebb — versions >= 1.0.4, < 1.18.5
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/NodeBB/NodeBB/releases/tag/v1.18.5 (Third Party Advisory, Release Notes)
- github.com/NodeBB/NodeBB/security/advisories/GHSA-pfj7-2qfw-vwgm (Third Party Advisory)
- github.com/NodeBB/NodeBB/commit/c8b2fc46dc698db687379106b3f01c71b80f495f (Patch, Third Party Advisory)
- blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/ (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-43788?
- CVE-2021-43788 is a medium-severity vulnerability in Nodebb, classified under Path Traversal. CVSS score: 5.0/10. Published 2021-11-29.
- How severe is CVE-2021-43788?
- Medium severity. CVSS v3 base score is 5.0 out of 10.
- Is CVE-2021-43788 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.