CompanionApplication · Atlassian
CVE-2023-22524
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedCertain 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.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceAtlassian Companion App for macOS contains a remote code execution vulnerability where attackers leverage WebSockets to bypass the application's blocklist mechanism and macOS Gatekeeper protections, enabling unauthorized code execution on affected systems.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data
CompanionApplication
>= 1.0.0, < 2.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify Atlassian Companion is installedCheck for the application in /Applications or ~/Applications folder, or run: ls -la /Applications | grep -i 'Atlassian Companion'Affected if The application directory exists in system or user application folders
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Determine installed versionRun: mdls -name kMDItemVersion '/Applications/Atlassian Companion.app' 2>/dev/null || defaults read '/Applications/Atlassian Companion.app/Contents/Info' CFBundleVersionAffected if Version is 1.x (greater than or equal to 1.0.0 and less than 2.0.0)
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Confirm application is runningRun: ps aux | grep -i 'Atlassian Companion' | grep -v grepAffected if The Companion process is actively running on the system
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Check for WebSocket network activityRun: lsof -i -P | grep -i 'Atlassian' to see active network connections, or inspect with Charles Proxy/Wireshark for WebSocket traffic on typical portsAffected if WebSocket connections are active to/from the Companion process
The system is affected if Atlassian Companion version 1.x is installed and the application is running, allowing the WebSocket-based RCE to be exploited.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data2.0.0
Organizations should update to the patched version of Atlassian Companion App for macOS immediately; until then, restrict or disable the application and monitor for suspicious WebSocket traffic.
Fix this in Companion
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-22524 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-22524 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data