CVE-2021-26085
Atlassian Confluence Server Pre-Authorization Arbi - [Actively Exploited]
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.
INFO
Published Date :
Aug. 3, 2021, 12:15 a.m.
Last Modified :
March 13, 2025, 8:02 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
1.4
Exploitability Score :
3.9
CISA KEV (Known Exploited Vulnerabilities)
For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.
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.
Apply updates per vendor instructions.
https://nvd.nist.gov/vuln/detail/CVE-2021-26085
Public PoC/Exploit Available at Github
CVE-2021-26085 has a 30 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
Affected Products
The following products are affected by CVE-2021-26085
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-26085.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
oscp notes
A curated collection of Proof of Concept (PoC) tools, scripts, and techniques designed for red team operations, penetration testing, and cybersecurity research. This repository focuses on providing practical resources for exploring vulnerabilities
attack cybersecurity exp hw penetration-testing poc red-team security-tools vulnerability-poc
This repository is designed to provide a comprehensive collection of study materials, notes, and resources for the Offensive Security Certified Professional (OSCP) exam. It covers all key topics from basic to advanced, helping aspiring penetration testers to prepare efficiently for the exam.
cybersecurity hacking oscp oscp-guide oscp-journey oscp-prep
None
Python C Shell PHP PowerShell ASP.NET
这是一个每天同步Vulnerability-Wiki中docs-base中内容的项目
HTML
OSCP and stuffs
None
Python C Shell
OffSec Certified Professional Certification (OSCP).
oscp oscp-cheatsheet oscp-guide oscp-journey oscp-prep oscp-tools offsec-certified-professional-certification offensive-security offensivesecurity awesome-list awesome-lists cheatsheet offensive-ops
Oscp-notes
None
CSS HTML JavaScript
None
Python C Shell
Ethical Hacking Repository
Python C Shell
OSCP Cheat Sheet
cheatsheet oscp
Python C Shell
None
Python C Shell
None
Python C Shell
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-26085 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-26085 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Modified Analysis by [email protected]
Mar. 13, 2025
Action Type Old Value New Value -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Feb. 07, 2025
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-425 -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html Added Reference https://jira.atlassian.com/browse/CONFSERVER-67893 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CWE Remap by [email protected]
Aug. 08, 2023
Action Type Old Value New Value Changed CWE CWE-862 CWE-425 -
Reanalysis by [email protected]
Jun. 10, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html 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 Changed CPE Configuration OR *cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:* versions up to (excluding) 7.4.10 *cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:* versions from (including) 7.5.0 up to (excluding) 7.12.3 OR *cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* versions up to (excluding) 7.4.10 *cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* versions from (including) 7.5.0 up to (excluding) 7.12.3 *cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* versions up to (excluding) 7.4.10 *cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* versions from (including) 7.5.0 up to (excluding) 7.12.3 -
Modified Analysis by [email protected]
Jan. 01, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html No Types Assigned http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Oct. 05, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrary-File-Read.html [No Types Assigned] -
Initial Analysis by [email protected]
Aug. 11, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N Changed Reference Type https://jira.atlassian.com/browse/CONFSERVER-67893 No Types Assigned https://jira.atlassian.com/browse/CONFSERVER-67893 Issue Tracking, Vendor Advisory Added CWE NIST CWE-862 Added CPE Configuration OR *cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:* versions up to (excluding) 7.4.10 *cpe:2.3:a:atlassian:confluence:*:*:*:*:*:*:*:* versions from (including) 7.5.0 up to (excluding) 7.12.3
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-26085 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-26085
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
94.33 }} -0.89%
score
0.99944
percentile