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CVE-2021-26085

Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read...

Basic Information

CVE State
PUBLISHED
Reserved Date
January 25, 2021
Published Date
August 03, 2021
Last Updated
February 07, 2025
Vendor
Atlassian
Product
Confluence Server, Confluence Data Center
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.

CVSS Scores

CVSS v3.1

5.3 - MEDIUM

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

SSVC Information

Exploitation
active
Automatable
Yes
Technical Impact
partial

Exploit Status

Exploited in the Wild
Yes (added 2022-03-28 00:00:00 UTC) Source
Proof of Concept Available
Yes (added 2021-10-05 08:20:25 UTC) Source
Used in Malware
Yes (added 2022-03-28 00:00:00 UTC) Source

References

https://jira.atlassian.com/browse/CONFSERVER-67893 http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html

Known Exploited Vulnerability Information

Source Added Date
CISA 2022-03-28 00:00:00 UTC

Scanner Integrations

Scanner URL Date Detected
Nuclei https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-26085.yaml 2025-04-26 00:00:00 UTC

Potential Proof of Concepts

Warning: These PoCs have not been tested and could contain malware. Use at your own risk.

ColdFusionX/CVE-2021-26085

Type: github • Created: 2021-10-05 08:20:25 UTC • Stars: 14

Atlassian Confluence Server 7.5.1 Pre-Authorization Arbitrary File Read vulnerability (CVE-2021-26085)