What’s Vulnerable › Vulnerabilities
CVE-2020-26519
- Severity: medium (CVSS 5.5 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.0% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2020-10-02 · updated 2026-06-17
- Weakness: CWE-787
Description
Artifex MuPDF before 1.18.0 has a heap based buffer over-write when parsing JBIG2 files allowing attackers to cause a denial of service.
Affected products
- Artifex MuPDF: before 1.18.0 — fixed in 1.18.0
- Debian Linux: 9.0, 10.0
- Fedoraproject Fedora: 32, 33
How to fix
Upgrade to a fixed version: Artifex MuPDF 1.18.0. Check the vendor advisory for mitigations.
References
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
- https://bugs.ghostscript.com/show_bug.cgi?id=702937
- https://lists.debian.org/debian-lts-announce/2021/03/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/
- https://security.gentoo.org/glsa/202105-30
- https://www.debian.org/security/2020/dsa-4794
- http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
- https://bugs.ghostscript.com/show_bug.cgi?id=702937
- https://lists.debian.org/debian-lts-announce/2021/03/msg00012.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/
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