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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Mozilla | Firefox | unspecified – < 126 | 126 |
| Mozilla | Firefox ESR | unspecified – < 115.11 | 115.11 |
| Mozilla | Thunderbird | unspecified – < 115.11 | 115.11 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | firefox-esr | 115.11.0esr-1 | — |
| Debian 14 | thunderbird | 1:115.11.0-1 | — |
| Debian 14 | wpewebkit +1 | 2.52.5-1 | — |
| Debian 13 | firefox-esr | 115.11.0esr-1 | — |
| Debian 13 | thunderbird | 1:115.11.0-1 | — |
| Debian 13 | webkit2gtk | 2.52.5-1~deb13u1 | — |
| Debian 13 | wpewebkit | No fix yet | — |
| Debian 12 | firefox-esr | 115.11.0esr-1~deb12u1 | DSA-5691-1 |
| Debian 12 | thunderbird | 1:115.11.0-1~deb12u1 | DSA-5693-1 |
| Debian 12 | wpewebkit +1 | No fix yet | — |
| Debian 11 | firefox-esr | 115.11.0esr-1~deb11u1 | DSA-5691-1 |
| Debian 11 | odoo | 14.0.0+dfsg.2-7+deb11u2 | DSA-5742-1 |
| Debian 11 | thunderbird | 1:115.11.0-1~deb11u1 | DSA-5693-1 |
| Debian 10 | firefox-esr | 115.11.0esr-1~deb10u1 | DLA-3815-1 |
| Debian 10 | thunderbird | 1:115.11.0-1~deb10u1 | DLA-3817-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 24.04 LTS | mozjs102 | No fix yet | — |
| Ubuntu 22.04 LTS | mozjs78 +2 | No fix yet | — |
| Ubuntu 22.04 LTS | thunderbird | 1:115.11.0+build2-0ubuntu0.22.04.1 | USN-6782-1 |
| Ubuntu 20.04 LTS | firefox | 126.0+build2-0ubuntu0.20.04.1 | USN-6779-1 |
| Ubuntu 20.04 LTS | mozjs52 +1 | No fix yet | — |
| Ubuntu 20.04 LTS | thunderbird | 1:115.11.0+build2-0ubuntu0.20.04.1 | USN-6782-1 |
| Ubuntu 18.04 LTS | mozjs38 +1 | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | firefox +2 | 115.11.0-1.el9_4 | RHSA-2024:2888, RHSA-2024:2883 |
| RHEL 9 | webkit2gtk3 +3 | 2.52.5-1.el9_8 | RHSA-2026:42062 |
| RHEL 8 | firefox +1 | 115.11.0-1.el8_10 | RHSA-2024:3784, RHSA-2024:3783 |
| RHEL 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | RHSA-2026:42088 |
| RHEL 7 | firefox +1 | 115.11.0-1.el7_9 | RHSA-2024:2913, RHSA-2024:2881 |
Show 17 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9.6 EUS | webkit2gtk3 +3 | 2.52.5-1.el9_6 | RHSA-2026:54572 |
| RHEL 9.4 E4S | webkit2gtk3 +3 | 2.52.5-1.el9_4 | RHSA-2026:54634 |
| RHEL 9.2 EUS | firefox +2 | 115.11.0-1.el9_2 | RHSA-2024:2906, RHSA-2024:2903 |
| RHEL 9.2 E4S | webkit2gtk3 +3 | 2.52.5-1.el9_2 | RHSA-2026:58550 |
| RHEL 9.0 EUS | firefox +1 | 115.11.0-1.el9_0 | RHSA-2024:2904, RHSA-2024:2884 |
| RHEL 8.8 TUS | webkit2gtk3 +3 | 2.52.5-1.el8_8 | RHSA-2026:59326 |
| RHEL 8.8 EUS | firefox +1 | 115.11.0-1.el8_8 | RHSA-2024:2905, RHSA-2024:2885 |
| RHEL 8.8 E4S | webkit2gtk3 +3 | 2.52.5-1.el8_8 | RHSA-2026:59326 |
| RHEL 8.6 EUS Long Life | webkit2gtk3 +3 | 2.52.5-1.el8_6 | RHSA-2026:59325 |
| RHEL 8.6 EUS | firefox +1 | 115.11.0-1.el8_6 | RHSA-2024:2912, RHSA-2024:2887 |
| RHEL 8.6 AUS | webkit2gtk3 +3 | 2.52.5-1.el8_6 | RHSA-2026:59325 |
| RHEL 8.4 TUS | firefox +1 | 115.11.0-1.el8_4 | RHSA-2024:2911, RHSA-2024:2886 |
| RHEL 8.4 EUS Long Life | webkit2gtk3 +3 | 2.52.5-1.el8_4 | RHSA-2026:57348 |
| RHEL 8.4 E4S | firefox +1 | 115.11.0-1.el8_4 | RHSA-2024:2911, RHSA-2024:2886 |
| RHEL 8.4 AUS | firefox +1 | 115.11.0-1.el8_4 | RHSA-2024:2911, RHSA-2024:2886 |
| RHEL 8.4 AUS | webkit2gtk3 +3 | 2.52.5-1.el8_4 | RHSA-2026:57348 |
| RHEL 8.2 AUS | firefox +1 | 115.11.0-1.el8_2 | RHSA-2024:3338, RHSA-2024:2882 |
| RHEL 7 ELS | webkitgtk4 +4 | 2.52.5-1.el7_9 | RHSA-2026:58564 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 9 | firefox +2 | 115.11.0-1.el9_4.alma.1 | ALSA-2024:2888, ALSA-2024:2883 |
| AlmaLinux 9 | webkit2gtk3 +3 | 2.52.5-1.el9_8 | ALSA-2026:42062 |
| AlmaLinux 8 | firefox +1 | 115.11.0-1.el8_10.alma.1 | ALSA-2024:3784, ALSA-2024:3783 |
| AlmaLinux 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | ALSA-2026:42088 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 9 | thunderbird | 115.11.0-1.el9_4 | RLSA-2024:2888 |
| Rocky Linux 9 | webkit2gtk3 | 2.52.5-1.el9_8 | RLSA-2026:42062 |
| Rocky Linux 8 | firefox +1 | 115.11.0-1.el8_10 | RLSA-2024:3784, RLSA-2024:3783 |
| Rocky Linux 8 | webkit2gtk3 | 2.52.5-1.el8_10 | RLSA-2026:42088 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES 15 SP6 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES 15 SP6 | MozillaThunderbird | 115.11.0-150200.8.160.1 | SUSE-SU-2024:1858-1 |
| SLES 15 SP6 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES 15 SP5 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES 15 SP5 | MozillaThunderbird | 115.11.0-150200.8.160.1 | SUSE-SU-2024:1858-1 |
| SLES 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES 15 SP4 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES 15 SP3 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
Show 15 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP2 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES 12 SP5 | MozillaFirefox | 115.11.0-112.212.1 | SUSE-SU-2024:1676-1 |
| SLES 12 SP5 | webkit2gtk3 | 2.52.5-4.63.2 | SUSE-SU-2026:3555-1 |
| SLES for SAP 16.0 | webkit2gtk3 +1 | 2.52.5-160000.1.1 | SUSE-SU-2026:23133-1, SUSE-SU-2026:23111-1 |
| SLES for SAP 15 SP6 | webkit2gtk3 +2 | 2.52.5-150600.12.71.1 | SUSE-SU-2026:3338-1 |
| SLES for SAP 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES for SAP 15 SP4 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES for SAP 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLES for SAP 15 SP3 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES for SAP 15 SP2 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLES for SAP 12 SP5 | MozillaFirefox | 115.11.0-112.212.1 | SUSE-SU-2024:1676-1 |
| SLES 16.0 | webkit2gtk3 +1 | 2.52.5-160000.1.1 | SUSE-SU-2026:23133-1, SUSE-SU-2026:23111-1 |
| SLE HPC 15 SP5 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLE HPC 15 SP4 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLE HPC 15 SP4 | webkit2gtk3 +2 | 2.52.5-150400.4.146.1 | SUSE-SU-2026:3396-1 |
| SLE HPC 15 SP3 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SLE HPC 15 SP2 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| SUSE Enterprise Storage 7.1 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | MozillaFirefox | 126.0-1.1 | openSUSE-SU-2024:13980-1 |
| openSUSE Tumbleweed | MozillaThunderbird | 115.11.0-1.1 | openSUSE-SU-2024:13981-1 |
| openSUSE Tumbleweed | firefox-esr | 128.5.1-1.1 | openSUSE-SU-2024:14572-1 |
| openSUSE Leap 16.0 | webkit2gtk3 +2 | 2.52.5-160000.1.1 | openSUSE-SU-2026:21508-1 |
| openSUSE Leap 15.6 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| openSUSE Leap 15.6 | MozillaThunderbird | 115.11.0-150200.8.160.1 | SUSE-SU-2024:1858-1 |
| openSUSE Leap 15.5 | MozillaFirefox | 115.11.0-150200.152.137.2 | SUSE-SU-2024:1770-1 |
| openSUSE Leap 15.5 | MozillaThunderbird | 115.11.0-150200.8.160.1 | SUSE-SU-2024:1858-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | thunderbird | 115.11.0-1.amzn2.0.1 | ALAS2-2024-2561 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 9 | firefox +2 | 115.11.0-1.0.1.el9_4 | ELSA-2024-2888, ELSA-2024-2883 |
| Oracle Linux 9 | webkit2gtk3 +3 | 2.52.5-1.el9_8 | ELSA-2026-42062 |
| Oracle Linux 8 | firefox +1 | 115.11.0-1.0.1.el8_10 | ELSA-2024-3784, ELSA-2024-3783 |
| Oracle Linux 8 | webkit2gtk3 +3 | 2.52.5-1.el8_10 | ELSA-2026-42088 |
| Oracle Linux 7 | firefox +1 | 115.11.0-1.0.1.el7_9 | ELSA-2024-2913, ELSA-2024-2881 |
Public exploits
Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.
Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.
Exploit-DB 1
- Firefox ESR 115.11 - PDF.js Arbitrary JavaScript execution EDB-52273 · remote · Apr 22, 2025
GitHub 31 repositories · most starred shown
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LOURC0D3/CVE-2024-4367-PoC ★ 203 · May 20, 2024
CVE-2024-4367 & CVE-2024-34342 Proof of Concept
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s4vvysec/CVE-2024-4367-POC ★ 57 · May 20, 2024
CVE-2024-4367 arbitrary js execution in pdf js
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Zombie-Kaiser/cve-2024-4367-PoC-fixed ★ 12 · Jun 13, 2024
PDF.js是由Mozilla维护的基于JavaScript的PDF查看器。此漏洞允许攻击者在打开恶意 PDF 文件后立即执行任意 JavaScript 代码。这会影响所有 Firefox 用户 （<126），因为 Firefox 使用 PDF.js 来显示 PDF 文件，但也严重影响了许多基于 Web 和 Electron 的应用程序，这些应用程序（间接）使用 PDF.js 进行预览功能。
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spaceraccoon/detect-cve-2024-4367 ★ 11 · May 22, 2024
YARA detection rule for CVE-2024-4367 arbitrary javascript execution in PDF.js
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snyk-labs/pdfjs-vuln-demo ★ 10 · Jun 17, 2024
This project is intended to serve as a proof of concept to demonstrate exploiting the vulnerability in the PDF.js (pdfjs-dist) library reported in CVE-2024-4367
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UnHackerEnCapital/PDFernetRemotelo ★ 6 · Jun 19, 2024
PoC - Prueba de Concepto de CVE-2024-4367 en conjunto al CVE-2023-38831 en un solo Script
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Masamuneee/CVE-2024-4367-Analysis ★ 5 · Sep 4, 2024
Analysis and PoC for CVE-2024-4367: arbitrary JavaScript execution (XSS) in PDF.js
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clarkio/pdfjs-vuln-demo ★ 4 · May 22, 2024
This project is intended to serve as a proof of concept to demonstrate exploiting the vulnerability in the PDF.js (pdfjs-dist) library reported in CVE-2024-4367
-
exfil0/WEAPONIZING-CVE-2024-4367 ★ 3 · Jan 5, 2025
CVE-2024-4367 is a critical vulnerability (CVSS 9.8) in PDF.js, allowing arbitrary JavaScript code execution due to insufficient type checks on the FontMatrix object within PDF files.
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AnomalousVectors/cve-2024-4367-poc ★ 2 · Jun 28, 2025
POC for PDF JS' CVE-2024-4367 vuln
Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | pdfjs-dist | < 4.2.67 | 4.2.67 | GHSA-wgrm-67xf-hhpq |
Advisories 50
- ALSA-2026:42062 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:2883 Important: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:2888 Important: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2026:42088 Important: webkit2gtk3 security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3783 Moderate: firefox security update AlmaLinux Security Advisories · Oct 29, 2026
- ALSA-2024:3784 Moderate: thunderbird security update AlmaLinux Security Advisories · Oct 29, 2026
- WID-SEC-2026-2358 WebKitGTK: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 28, 2026
- RHSA-2026:59325 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:59326 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:58564 Red Hat Security Advisory: webkitgtk4 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:58550 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:57348 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:54634 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:54572 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:42088 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2026:42062 Red Hat Security Advisory: webkit2gtk3 security update Red Hat Security Advisories (RHSA) · Oct 2, 2026
- RHSA-2024:3783 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:3784 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:3338 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2913 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2906 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2911 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2912 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2905 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2903 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2904 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2888 Red Hat Security Advisory: thunderbird security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2887 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2885 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2886 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2884 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2882 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2883 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- RHSA-2024:2881 Red Hat Security Advisory: firefox security update Red Hat Security Advisories (RHSA) · Aug 26, 2026
- SUSE-SU-2026:23133-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:23111-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 14, 2026
- SUSE-SU-2026:3555-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 12, 2026
- openSUSE-SU-2026:21508-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Aug 2, 2026
- SUSE-SU-2026:3396-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Jul 30, 2026
- SUSE-SU-2026:3338-1 Security update for webkit2gtk3 SUSE / openSUSE Security Updates · Jul 29, 2026
- RLSA-2026:42062 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Jul 22, 2026
- RLSA-2026:42088 Important: webkit2gtk3 security update Rocky Linux Security Advisories · Jul 21, 2026
- ELSA-2026-42062 Important: webkit2gtk3 security update (Oracle Linux 9) Oracle Linux Security Advisories (ELSA) · Jul 20, 2026
- ELSA-2026-42088 Important: webkit2gtk3 security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Jul 20, 2026
- ICSA-26-134-04 Siemens Teamcenter CISA ICS & IT advisories · May 14, 2026
- NCSC-2026-0147 Kwetsbaarheden verholpen in Siemens-producten NCSC-NL (Netherlands) · May 13, 2026
- SSA-827383 SSA-827383: Multiple Vulnerabilities in Teamcenter Siemens ProductCERT · May 12, 2026
- USN-6779-1 firefox vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- USN-6782-1 thunderbird vulnerabilities Ubuntu Security Notices (USN) · Apr 22, 2026
- DSA-5693-1 thunderbird - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=1893645
- 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://lists.debian.org/debian-lts-announce/2024/05/msg00010.html
- https://lists.debian.org/debian-lts-announce/2024/05/msg00012.html