CVE-2020-26519 json
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.
published 2020-10-02 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-19066
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 1.0%
- EPSS 1.0% chance of exploitation in 30 days, percentile 63%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- artifex mupdf 1.18.0
- mupdf Debian 14, Debian 13, Debian 12 1.17.0+ds1-1.1
debian advisories DEBIAN-CVE-2020-26519
- mupdf Alpine 3.12 1.17.0-r2
- mupdf Alpine 3.24, Alpine 3.23, Alpine 3.22 +9 more 1.17.0-r3
alpine advisories ALPINE-CVE-2020-26519
Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2020-26519 updated cvss 5.3
mupdf: heap based buffer over-write when parsing JBIG2 files allows DoS
-
Red Hat All currently supported Red Hat productsnot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Exploit prediction
1.03% chance of exploitation in the next 30 days, higher than 63% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
| NVD | 2.0 | 4.3 | AV:N/AC:M/Au:N/C:N/I:N/A:P |
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
References
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/SOF4PX2A5TGKKPMXINADSOJJ4H5UUMKK/
vendor-advisory
-
lists.fedoraproject.org
/archives/list/package-announce%40lists.fedoraproject.org/message/WJMBKWVY7ZBIQV3EU5YHEFH5XWV4PABG/
vendor-advisory
-
debian.org
/security/2020/dsa-4794
vendor-advisory, third-party-advisory
-
security.gentoo.org
/glsa/202105-30
vendor-advisory, third-party-advisory
-
bugs.ghostscript.com
/show_bug.cgi?id=702937
permissions-required, third-party-advisory
- git.ghostscript.com /?p=mupdf.git%3Ba=commit%3Bh=af1e390a2c7abceb32676ec684cd1dbb92907ce8
-
lists.debian.org
/debian-lts-announce/2021/03/msg00012.html
mailing-list, third-party-advisory
Sources
- CVE List CVE-2020-26519
- NVD CVE-2020-26519
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.