critical9.0
CVE-2021-43787
XSS via prototype pollution in NodeBB
Impact
### Impact A prototype pollution vulnerability in the uploader module allowed a malicious user to inject arbitrary data (i.e. javascript) into the DOM, theoretically allowing for an account takeover when used in conjunction with a path traversal vulnerability disclosed at the same time as this report. ### Patches The vulnerability has been patched as of v1.18.5. ### Workarounds Cherry-pick commit hash 1783f918bc19568f421473824461ff2ed7755e4c 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](mailto:security@nodebb.org)
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | nodebb | >= 1.15.0, < 1.18.5 | 1.18.5 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Nodebb | Nodebb | from 1.15.5 through 1.18.4 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot/
- https://github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c
- https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5
- https://github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc
- https://github.com/advisories/GHSA-wx69-rvg3-x7fc
- https://nvd.nist.gov/vuln/detail/CVE-2021-43787