CVE-2023-46361: Artifex Software jbig2dec v0.20 was discovered to contain a SEGV vulnerability via jbig2_error at /jbig2dec/jb

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MEDIUM 6.5DOWNGRADE

CVE-2023-46361 is a medium-severity flaw (CVSS 6.5) affecting jbig2dec. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Artifex Software jbig2dec v0.20 was discovered to contain a SEGV vulnerability via jbig2_error at /jbig2dec/jbig2.c.

Why this priority

Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.8% (top 45%)
CISA exploited list	No
Weakness	CWE-400
Published	2023-10-31
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: artifex

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2023-10-31 06:15 UTCPublished CVE record published
2026-06-17 06:30 UTCUpdated Record last modified

artifex jbig2dec DOWNGRADE

Affected: 0.20

Fixed in: no fixed release known

Safe to downgrade to: a release before 0.20

1. Check installed version

apt-cache policy jbig2dec || rpm -q jbig2dec || jbig2dec --version

2. No fixed release: DOWNGRADE to a release before 0.20 (Debian / Ubuntu)

apt-cache madison jbig2dec sudo apt install jbig2dec=<VERSION_BEFORE_0.20> sudo apt-mark hold jbig2dec

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list jbig2dec sudo dnf downgrade jbig2dec-<VERSION_BEFORE_0.20> sudo dnf versionlock add jbig2dec

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2023-46361?

jbig2dec: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2023-46361 being exploited?

CVE-2023-46361 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2023-46361 affect?

CVE-2023-46361 affects jbig2dec. Severity is medium (CVSS 6.5). Artifex Software jbig2dec v0.20 was discovered to contain a SEGV vulnerability via jbig2_error at /jbig2dec/jbig2.c.

How urgent is CVE-2023-46361?

Priority 42/100. Public exploit reference

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References

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