CVE-2021-26085

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. 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.

5.3 /10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0 /10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:N

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

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

Configuration 1 (hide)

OR cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
History

24 Oct 2025, 13:38

Type Values Removed Values Added
References () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085 - () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085 - US Government Resource

22 Oct 2025, 00:17

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085 -

21 Oct 2025, 20:18

Type Values Removed Values Added
References
  • {'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085', 'source': '134c704f-9b21-4f2e-91b3-4a467353bcc0'}

21 Oct 2025, 19:18

Type Values Removed Values Added
References
  • () https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26085 -

21 Nov 2024, 05:55

Type Values Removed Values Added
References () http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - Exploit, Third Party Advisory, VDB Entry () http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - Exploit, Third Party Advisory, VDB Entry
References () https://jira.atlassian.com/browse/CONFSERVER-67893 - Issue Tracking, Vendor Advisory () https://jira.atlassian.com/browse/CONFSERVER-67893 - Issue Tracking, Vendor Advisory

08 Aug 2023, 14:22

Type Values Removed Values Added
CWE CWE-862 CWE-425

10 Jun 2022, 14:25

Type Values Removed Values Added
References (MISC) http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - Third Party Advisory, VDB Entry (MISC) http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - Exploit, Third Party Advisory, VDB Entry
CPE cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:* cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*

01 Jan 2022, 17:55

Type Values Removed Values Added
References (MISC) http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - (MISC) http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html - Third Party Advisory, VDB Entry

05 Oct 2021, 17:15

Type Values Removed Values Added
References
  • (MISC) http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html -

11 Aug 2021, 17:49

Type Values Removed Values Added
CWE CWE-862
References (N/A) https://jira.atlassian.com/browse/CONFSERVER-67893 - (N/A) https://jira.atlassian.com/browse/CONFSERVER-67893 - Issue Tracking, Vendor Advisory
CPE cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:*
CVSS v2 : unknown
v3 : unknown 		v2 : 5.0
v3 : 5.3

03 Aug 2021, 00:15

Type Values Removed Values Added
New CVE
Information

Published : 2021-08-03 00:15

Updated : 2025-10-24 13:38

NVD link : CVE-2021-26085

Mitre link : CVE-2021-26085

CVE.ORG link : CVE-2021-26085

JSON object : View

Products Affected

atlassian

  • confluence_server
  • confluence_data_center
CWE
CWE-425

Direct Request ('Forced Browsing')