Public proof of conceptFix available

CVE-2022-44789

Q: Is CVE-2022-44789 actively exploited?

Active exploitation of CVE-2022-44789 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

Q: What is the CVSS score for CVE-2022-44789?

CVE-2022-44789 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2022-11-23
Fixed in1.3.2
WeaknessCWE-787

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

A logical issue in O_getOwnPropertyDescriptor() in Artifex MuJS 1.0.0 through 1.3.x before 1.3.2 allows an attacker to achieve Remote Code Execution through memory corruption, via the loading of a crafted JavaScript file.

Timeline

dates in UTC

2022-11-2321:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub

Observed activity

isMalicious corpus · updated 2026-10-23 18:48 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2022-44789?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2022-44789?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Artifex mujs

Branch	Affected	Fixed in	Source
1.x	≥ 1.0.0, < 1.3.2	1.3.2	NVD

Debian debian linux

Branch	Affected	Fixed in	Source
11.0	= 11.0	no fix published	NVD

Fedoraproject fedora

Branch	Affected	Fixed in	Source
37.x	= 37	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Artifex mujs to 1.3.2

Advisories and patches

github.comPatch
github.comPatch
github.comRelease Notes

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 1 repository, unverifiedalalng/CVE-2022-44789

Sources

CISA-ADPSSVC decisionnone2025-04-25
OpenCVESSVC decisionnone—
CISA-ADPCVSS 3.18.82025-04-25
NVDCVSS 3.18.8read 2026-10-23
CISA-ADPweakness (CWE)CWE-7872025-04-25
NVDweakness (CWE)CWE-787read 2026-10-23
FIRST EPSSEPSS score2.5 %2026-10-22
PoC-in-GitHubproof of concept1read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published: 2022-11-23
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2022-44789?

Is CVE-2022-44789 actively exploited?

Active exploitation of CVE-2022-44789 has not been confirmed. Its EPSS score was 2.5% on 2026-10-22, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2022-44789?

CVE-2022-44789 has a CVSS v3 base score of 8.8 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

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