CVE-2024-4367

HIGH

Published May 14, 2024 Modified May 12, 2026 CWE-754

Description

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 your site exposed to CVE-2024-4367?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-754 CWE-754

Affected Products

Vendor	Product	Versions
mozilla	firefox	< 115.11.0
mozilla	firefox	< 126.0
mozilla	thunderbird	< 115.11.0
debian	debian_linux	All
open-xchange	open-xchange_appsuite_frontend	< 7.10.6
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All
open-xchange	open-xchange_appsuite_frontend	All

References

Advisories & Patches

https://www.mozilla.org/security/advisories/mfsa2024-21/ https://www.mozilla.org/security/advisories/mfsa2024-22/ https://www.mozilla.org/security/advisories/mfsa2024-23/ https://www.mozilla.org/security/advisories/mfsa2024-21/ https://www.mozilla.org/security/advisories/mfsa2024-22/ https://www.mozilla.org/security/advisories/mfsa2024-23/

Other References

https://bugzilla.mozilla.org/show_bug.cgi?id=1893645 https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html http://seclists.org/fulldisclosure/2024/Aug/30 https://bugzilla.mozilla.org/show_bug.cgi?id=1893645 https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/ https://github.com/gogs/gogs/issues/7928 https://github.com/mozilla/pdf.js/releases/tag/v4.2.67 https://lists.debian.org/debian-lts-announce/2024/05/msg00010.html https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html

Frequently Asked Questions

What is CVE-2024-4367? +

How severe is CVE-2024-4367? +

CVE-2024-4367 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-4367? +

CVE-2024-4367 affects products from debian, mozilla, open-xchange, specifically: debian_linux, firefox, open-xchange_appsuite_frontend, thunderbird. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-4367? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-35225

An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate …

CVE-2025-0112

A problem with a detection mechanism in the Palo Alto Networks Cortex XDR agent on Windows devices enables a user …

CVE-2025-0116

A Denial of Service (DoS) vulnerability in Palo Alto Networks PAN-OS software causes the firewall to unexpectedly reboot when processing …

CVE-2025-0128

A denial-of-service (DoS) vulnerability in the Simple Certificate Enrollment Protocol (SCEP) authentication feature of Palo Alto Networks PAN-OS® software enables …

CVE-2025-0129

An improper exception check in Palo Alto Networks Prisma Access Browser allows a low privileged user to prevent Prisma Access …

CVE-2025-53359

ethereum is a common ethereum structs for Rust. Prior to ethereum crate v0.18.0, signature malleability (according to EIP-2) was only …