CVE-2021-43788 json
Path traversal in translator module of NobeBB
published 2021-11-29 4 y ago modified 2026-07-08 4 mo ago also GHSA-pfj7-2qfw-vwgm , EUVD-2021-2372
- cvss
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 25.8%
- EPSS 25.8% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm nodebb 1.18.5
Exploit prediction
25.84% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.sonarsource.com https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| NVD | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| NVD | 2.0 | 4.0 | AV:N/AC:L/Au:S/C:P/I:N/A:N |
| GitHub | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | nodebb | >=1.0.4, <1.18.5 |
1.18.5 |
Affected products
- NodeBB NodeBB
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
References
-
github.com
/NodeBB/NodeBB/commit/c8b2fc46dc698db687379106b3f01c71b80f495f
web, patch, third-party-advisory
-
blog.sonarsource.com
/nodebb-remote-code-execution-with-one-shot/
exploit, third-party-advisory
-
github.com
/NodeBB/NodeBB/releases/tag/v1.18.5
web, release-notes, third-party-advisory
-
github.com
/NodeBB/NodeBB/security/advisories/GHSA-pfj7-2qfw-vwgm
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2021-43788
advisory
-
blog.sonarsource.com
/nodebb-remote-code-execution-with-one-shot
web
-
github.com
/NodeBB/NodeBB
package
Sources
- CVE List CVE-2021-43788
- GitHub Advisory GHSA-pfj7-2qfw-vwgm
- NVD CVE-2021-43788
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.