Medium [CVE-2021-26085] Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources
This medium-severity Atlassian advisory covers CVE-2021-26085 affecting Confluence Server.
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Summary
Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint. The affected versions are before version 7.4.10, and from version 7.5.0 before 7.12.3.
CISA Known Exploited Vulnerability
- Listed:
- Mar 28, 2022 · federal remediation due Apr 18, 2022
- Required action:
- Apply updates per vendor instructions.
- Ransomware use:
- Known
KEV is a prioritization signal from CISA — remediation detail still comes from the vendor advisory.
- 7.5.0
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- 7.12.3
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 7.12.3. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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