SOC status:Duty analyst on shift

UK Cyber Defence
VulnerabilityModified

CVE-2023-22524

Certain versions of the Atlassian Companion App for MacOS were affected by a remote code execution vulnerability.

CRITICAL 9.8EPSS 24.7%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 24.7%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.

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.

CVSS 3.1
9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS
24.71% probability · 98th percentile
Public exploits
None in Exploit-DB
CISA KEV
Not listed
Affected
atlassian/companion
Source
security@atlassian.com
EPSS trend
0%13%25%3 November 2026: 24.71%3 November 20263 November 2026

EPSS 24.7% since 3 November 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.