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CISA Known Exploited Vulnerabilities

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV
2022-03-28
Remediation due
2022-04-18
Ransomware
Known use

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-26085

Description

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.

Severity

CVSS 3.1 · CISA5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
SSVC · CISA-ADP
Exploitationactive
Automatableyes
Technical impactpartial

Affected Products

VendorProductAffected versions
AtlassianConfluence Server
unspecified to <7.4.10
7.5.0 to <unspecified
unspecified to <7.12.3
AtlassianConfluence Data Center
unspecified to <7.4.10
7.5.0 to <unspecified
unspecified to <7.12.3

References

2 Links

Record Details

Published
2021-08-03
Last updated
2025-10-21
Assigner (CNA)
atlassian
Credited to
-

CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.