GHSA-wx69-rvg3-x7fc

XSS via prototype pollution in NodeBB

Source: GitHub Advisory Database (reviewed) Critical CVE-2021-43787

Packages

Ecosystem	Package	Affected	Fixed in
npm	nodebb	>= 1.15.0, < 1.18.5	1.18.5

Details

As written in the advisory (Markdown source, shown as plain text).

### 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 [[email protected]](mailto:[email protected])

References

External links from the advisory. They lead to third-party sites.

https://github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc web
https://nvd.nist.gov/vuln/detail/CVE-2021-43787 advisory
https://github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c web
https://blog.sonarsource.com/nodebb-remote-code-execution-with-one-shot web
https://github.com/NodeBB/NodeBB package
https://github.com/NodeBB/NodeBB/releases/tag/v1.18.5 web