SARA / Free Tools / CVE / CVE-2021-26085

CVE-2021-26085 — Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

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.

CVSS
EPSS
93.98% (top 0.10%)
CWE
Published
2021-08-03T00:00:12.199Z
Last modified
2025-10-21T23:25:39.229Z
CVSS vector
CISA KEV — Actively Exploited
Added to KEV
2022-03-28
BOD 22-01 due
2022-04-18
Ransomware use
Known

01What is this vulnerability?

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.

02Affected products

VendorProductVersions
AtlassianConfluence Serverunspecified, 7.5.0, unspecified
AtlassianConfluence Data Centerunspecified, 7.5.0, unspecified

03Active exploitation status

Yes — actively exploited. Added to the CISA KEV catalog on 2022-03-28. Ransomware use: Known.

04Recommended remediation

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

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07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

09References

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