CVE-2020-21896 — Use After Free in Mupdf

CWE-416 — Use After FreeCWE-400 — Uncontrolled Resource Consumption7 documents7 sources
Severity
5.5MEDIUMNVD
EPSS
0.2%
top 58.54%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Artifex Mupdf
Timeline
PublishedAug 22
Latest updateOct 16

Description

A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device.c in Artifex Software MuPDF 1.16.0 allows remote attackers to cause a denial of service via opening of a crafted PDF file.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages2 packages

▶Debianartifex/mupdf< 1.17.0+ds1-2+deb11u1+3
▶NVDartifex/mupdf1.16.0

Patches

Patch: bugs.ghostscript.com ↗Patch: bugs.ghostscript.com ↗

🔴Vulnerability Details

4
CVEList
CVE-2020-21896: A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device↗2023-08-22
▶
GHSA
GHSA-99jc-cxpj-3838: A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device↗2023-08-22
▶
OSV
CVE-2020-21896: A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in source/fitz/svg-device↗2023-08-22
▶
GHSA
Denial of service in github.com/ethereum/go-ethereum↗2021-06-29
▶

📋Vendor Advisories

2
Ubuntu
MuPDF vulnerabilities↗2025-10-16
▶
Debian
CVE-2020-21896: mupdf - A Use After Free vulnerability in svg_dev_text_span_as_paths_defs function in so...↗2020
▶
CVE-2020-21896 — Use After Free in Artifex Mupdf | cvebase