Vulnerability Intelligence Report
Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability
CVE-2021-26085
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 KEV
Nuclei Template
SSVC: Active Exploitation
Automatable
CVSS Base Score
5.3
MEDIUM
Exploitability:3.9
Impact Score:1.5
EPSS Probability:99.94%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-425 ↗CWE-425 Direct Request ('Forced Browsing')
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| Atlassian | Confluence Server | unspecified < 7.4.10 (affected), 7.5.0 < unspecified (affected), unspecified < 7.12.3 (affected) |
| Atlassian | Confluence Data Center | unspecified < 7.4.10 (affected), 7.5.0 < unspecified (affected), unspecified < 7.12.3 (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
CISA KEV
ACTIVE IN CATALOG
Nuclei Template
SCANNER AVAILABLE
EPSS Score
99.937%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Atlassian · Vendor · Australia |
| Reserved | 2021-01-25T00:00:00 |
| Published | 2021-08-03T00:00:12 |
| Patch Date | 2021-07-29 |
| Last Updated | 2025-10-21T23:25:39 |
Community Chatter & Buzz