CVE-2023-31794

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push...

5.5 MediumFix available

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Attack profile

How easy it is to exploit

Attack vector: Local
Complexity: Low
Privileges needed: None
User interaction: Required

What an attacker can affect

Confidentiality: None
Integrity: None
Availability: High

Exploit likelihood

0.25%Up 0.2 points since Oct 31, 2023

What each source reports

NVD Score used 5.5

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: CVE-2023-31794
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

CVE List No score

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: CVE-2023-31794
Updated: 2026-11-02

EUVDEUVD-2023-36085 No score

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: EUVD-2023-36085
Updated: 2026-11-03

GitHub AdvisoriesGHSA-fp46-48v5-9hqr 5.5

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push...

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: GHSA-fp46-48v5-9hqr
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Weakness: CWE-674
Updated: 2026-11-02

OSVDEBIAN-CVE-2023-31794 5.5

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: DEBIAN-CVE-2023-31794
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSVUBUNTU-CVE-2023-31794 5.5

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: UBUNTU-CVE-2023-31794
CVSS 3.1: 5.5 MediumCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Updated: 2026-11-02

OSV No score

MuPDF v1.21.1 was discovered to contain an infinite recursion in the component pdf_mark_list_push. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted PDF file.

Record: CVE-2023-31794
Updated: 2026-11-02

OSVopenSUSE-SU-2023:0363-1 No score

Security update for mupdf

This update for mupdf fixes the following issues:

CVE-2023-31794: Fixed denial of service via crafted pdf in pdf_mark_list_push() (boo#1216728)

Record: openSUSE-SU-2023:0363-1
Updated: 2026-11-02

OSVopenSUSE-SU-2024:13404-1 No score

mupdf-1.23.4-2.1 on GA media

These are all security issues fixed in the mupdf-1.23.4-2.1 package on the GA media of openSUSE Tumbleweed.

Record: openSUSE-SU-2024:13404-1
Updated: 2026-11-02

Affected products

artifex mupdf

Affected packages

Affected packages
Package	Affected	Fixed
`mupdf` Debian:12	All versions, plus listed versions 1.21.1+ds2-11.21.1+ds2-1+deb12u11.22.1+ds1-11.22.2+ds1-11.22.2+ds1-2 Show 27 moreShow less 1.23.10+ds1-11.23.10+ds1-21.23.6+ds1-11.23.7+ds1-11.24.10+ds1-11.24.3+ds1-11.24.8+ds2-11.24.8+ds2-21.24.9+ds1-11.25.1+ds1-11.25.1+ds1-21.25.1+ds1-31.25.1+ds1-41.25.1+ds1-51.25.1+ds1-61.25.1+ds1-71.25.1+ds1-81.25.1+ds1-91.27.0+ds1-11.27.0+ds1-21.27.0+ds1-31.27.0+ds1-41.27.0+ds1-51.27.0+ds1-61.28.0+ds1-11.28.2+ds1-11.28.2+ds1-2	None known
`mupdf` Debian:13	before 1.22.1+ds1-1	1.22.1+ds1-1
`mupdf` Debian:14	before 1.22.1+ds1-1	1.22.1+ds1-1
`mupdf` SUSE:Package Hub 15 SP5	before 1.21.1-bp155.3.3.1	1.21.1-bp155.3.3.1
`mupdf` openSUSE:Leap 15.5	before 1.21.1-bp155.3.3.1	1.21.1-bp155.3.3.1
`mupdf` openSUSE:Tumbleweed	before 1.23.4-2.1	1.23.4-2.1

History

History
Recorded	Changed	Sources
Nov 3, 2026	affected
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2023-31794 is a medium vulnerability (CVSS 5.5) in Artifex Mupdf, published October 31, 2023. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.25%, the 16th percentile. Fixed in mupdf 1.22.1+ds1-1.

References

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