The file downloading functionality in the Atlassian Companion App before version 1.0.0…
Key facts
- Attack vector
- Network
- Privileges required
- High
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
The file downloading functionality in the Atlassian Companion App before version 1.0.0 allows remote attackers, who control a Confluence Server instance that the Companion App is connected to, execute arbitrary .exe files via a Protection Mechanism Failure.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Companion App (Atlassian) Fixed in 1.0.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Atlassian Companion App 1.0.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2020-03510 Untrusted search path in Atlassian Companion AppPriority LOW 34
Timeline
- 2026-10-02 Threatist record created from CVE-2020-4020
- 2026-10-03 Alias added: GHSA-72w5-xxp4-hp3g
References
More Atlassian Companion vulnerabilities
- TI-2023-08763 Certain versions of the Atlassian Companion App for MacOS were affected by a remote code… CVSS 3.1CRITICAL 9.8
- TI-2020-03510 Untrusted search path in Atlassian Companion App CVSS 3.1HIGH 7.8
Sources
- CVE-2020-4020 · CVE Program
- CVE-2020-4020 · NVD
- FIRST EPSS
- GHSA-72w5-xxp4-hp3g · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences