CVE-2021-26085

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

Severity Score

5.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

Yes

*KEV

Decision

*SSVC

Descriptions

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.

Las versiones afectadas de Atlassian Confluence Server permiten a los atacantes remotos visualizar recursos restringidos por medio de una vulnerabilidad de lectura arbitraria de archivos de autorización previa en el endpoint /s/. Las versiones afectadas son anteriores a la versión 7.4.10 y desde la versión 7.5.0 anteriores a 7.12.3

Atlassian Confluence Server version 7.5.1 suffers from a 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.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-25 CVE Reserved
2021-08-03 CVE Published
2021-10-05 First Exploit
2022-03-28 Exploited in Wild
2022-04-18 KEV Due Date
2024-08-31 EPSS Updated
2024-09-17 CVE Updated

CWE

CWE-425: Direct Request ('Forced Browsing')

CAPEC

References (5)

URL	Tag	Source

URL	Date	SRC
https://www.exploit-db.com/exploits/50377	2021-10-05
https://github.com/ColdFusionX/CVE-2021-26085	2021-10-12
https://github.com/zeroc00I/CVE-2021-26085	2021-10-06
http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html	2024-09-17

URL	Date	SRC

URL	Date	SRC
https://jira.atlassian.com/browse/CONFSERVER-67893	2023-08-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Atlassian Search vendor "Atlassian"		Confluence Data Center Search vendor "Atlassian" for product "Confluence Data Center"				< 7.4.10 Search vendor "Atlassian" for product "Confluence Data Center" and version " < 7.4.10"		-		Affected
Atlassian Search vendor "Atlassian"		Confluence Data Center Search vendor "Atlassian" for product "Confluence Data Center"				>= 7.5.0 < 7.12.3 Search vendor "Atlassian" for product "Confluence Data Center" and version " >= 7.5.0 < 7.12.3"		-		Affected
Atlassian Search vendor "Atlassian"		Confluence Server Search vendor "Atlassian" for product "Confluence Server"				< 7.4.10 Search vendor "Atlassian" for product "Confluence Server" and version " < 7.4.10"		-		Affected
Atlassian Search vendor "Atlassian"		Confluence Server Search vendor "Atlassian" for product "Confluence Server"				>= 7.5.0 < 7.12.3 Search vendor "Atlassian" for product "Confluence Server" and version " >= 7.5.0 < 7.12.3"		-		Affected