CVE-2021-43787: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

November 29, 2021 (updated October 27, 2022)

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.

References

github.com/NodeBB/NodeBB/commit/1783f918bc19568f421473824461ff2ed7755e4c
github.com/NodeBB/NodeBB/releases/tag/v1.18.5
github.com/NodeBB/NodeBB/security/advisories/GHSA-wx69-rvg3-x7fc
nvd.nist.gov/vuln/detail/CVE-2021-43787

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