CVE-2021-26085

MediumCVSS 5.3/10Known exploited (CISA KEV)Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 5.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness enumeration

CWE-425

Affected software

Vendor	Product	Versions
Atlassian	Confluence Server	>= unspecified, < 7.4.10; >= 7.5.0, < unspecified; >= unspecified, < 7.12.3
Atlassian	Confluence Data Center	>= unspecified, < 7.4.10; >= 7.5.0, < unspecified; >= unspecified, < 7.12.3

References

http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.htmlExploit, Third Party Advisory, VDB Entry
https://jira.atlassian.com/browse/CONFSERVER-67893Issue Tracking, Vendor Advisory
http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.htmlExploit, Third Party Advisory, VDB Entry
https://jira.atlassian.com/browse/CONFSERVER-67893Issue Tracking, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085US Government Resource

Timeline

Published: Aug 3, 2021
Last modified: Jun 17, 2026
Added to CISA KEV: Mar 28, 2022
NVD status: Analyzed

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