Public proof of conceptFix available

CVE-2023-22524

Q: Is CVE-2023-22524 actively exploited?

A proof-of-concept exploit exists for CVE-2023-22524, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2023-22524?

CVE-2023-22524 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

A public proof of concept exists; no exploitation attested.

Published2023-12-06
Fixed in2.0.0

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

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability. An attacker could utilize WebSockets to bypass Atlassian Companion’s blocklist and MacOS Gatekeeper to allow execution of code.

Timeline

dates in UTC

2023-12-0605:15CVE publishedNVD
2026-10-2319:23First public proof of conceptPoC-in-GitHub
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

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-2023-22524?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2023-22524?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Atlassian companionversion to verify

Branch	Affected	Fixed in	Source
2.0	≥ 1.0.0, < 2.0.0	2.0.0	NVD

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

Fix

Update Atlassian companion to 2.0.0

Advisories and patches

confluence.atlassian.comVendor Advisory
jira.atlassian.comVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: 2 repositories, unverifiedimperva/CVE-2023-22524ron-imperva/CVE-2023-22524

Sources

CISA-ADPSSVC decisionpoc2023-12-19
OpenCVESSVC decisionpoc—
NVDCVSS 3.19.8read 2026-10-23
CNACVSS 3.09.6read 2026-10-23
FIRST EPSSEPSS score24.7 %read 2026-10-23
PoC-in-GitHubproof of concept2read 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2023-12-06
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2023-22524?

Is CVE-2023-22524 actively exploited?

A proof-of-concept exploit exists for CVE-2023-22524, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2023-22524?

CVE-2023-22524 has a CVSS v3 base score of 9.8 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

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