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Vulnerability record · CVE-2020-26519 · published 2 October 2020

CVE-2020-26519: Artifex mupdf out-of-bounds write vulnerability

Artifex · Mupdf

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.

5.5 CVSS 3.1 Medium EPSS 1.0% · top 36.9% CWE-787 · Out-of-bounds write
5.5CVSS 3.1 base score, v2 4.3
1.0%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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.

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

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
https://bugs.ghostscript.com/show_bug.cgi?id=702937 Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00012.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH
https://security.gentoo.org/glsa/202105-30 Third Party Advisory
https://www.debian.org/security/2020/dsa-4794 Third Party Advisory
http://git.ghostscript.com/?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
https://bugs.ghostscript.com/show_bug.cgi?id=702937 Permissions RequiredThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/03/msg00012.html Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJ
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH
https://security.gentoo.org/glsa/202105-30 Third Party Advisory
https://www.debian.org/security/2020/dsa-4794 Third Party Advisory

Track CVE-2020-26519 inside VULONE

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Source: NIST National Vulnerability Database (record CVE-2020-26519), CISA KEV, FIRST EPSS (scores of 2026-10-17). This page is refreshed as NVD updates the record.