What is CVE-2021-3184?

CVE-2021-3184 is a medium-severity vulnerability in Misp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-19.

How severe is CVE-2021-3184?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Misp

CVE-2021-3184

MISP 2.4.136 has XSS via a crafted URL to the app/View/Elements/global_menu.ctp user homepage favourite button.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-01-19 · last modified 2026-06-22.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (53.9th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 54th percentile — 53.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Misp — versions 2.4.136
Misp-Project Misp — versions 2.4.136

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/MISP/MISP/commit/8283e0fbec551f45f3f181cdb2cf29cddc23df66 (Patch, Third Party Advisory)

Frequently asked questions

What is CVE-2021-3184?: CVE-2021-3184 is a medium-severity vulnerability in Misp, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-01-19.
How severe is CVE-2021-3184?: Medium severity. CVSS v3 base score is 6.1 out of 10.