CVE-2024-4367: exploitation status and patch state

CVE-2024-4367 · CVSS 8.8 HIGH · EPSS 73%

A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.

Is CVE-2024-4367 exploited?

Which products and versions are affected?

No affected package list recorded here yet.

Is there a patch?

No patch identifier recorded here yet.

What PlainSec published about CVE-2024-4367

PlainSec has not published a story about this CVE.

Primary sources

What this record does not say

KEV and EPSS are re-checked daily. Record last updated 2026-08-11.