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Vulnerability record · CVE-2021-47746 · published 21 January 2026

CVE-2021-47746: NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to w…

NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to write files to arbitrary system locations through the emoji upload API. Attackers with admin access can craft file upload requests with directory traversal to overwrite system files by manipulating the file path parameter.

8.6 CVSS 4.0 High EPSS 0.75% · top 47.0% CWE-73 · CWE-73 Deferred
8.6CVSS 4.0 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
17 Jun 2026Last modified by NVD

Description

NodeBB Plugin Emoji 3.2.1 contains an arbitrary file write vulnerability that allows administrative users to write files to arbitrary system locations through the emoji upload API. Attackers with admin access can craft file upload requests with directory traversal to overwrite system files by manipulating the file path parameter.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/NodeBB/nodebb-plugin-emoji
https://nodebb.org/
https://www.exploit-db.com/exploits/49813
https://www.vulncheck.com/advisories/nodebb-plugin-emoji-arbitrary-file-write

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Source: NIST National Vulnerability Database (record CVE-2021-47746), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.