Vulnerability in Atlassian Confluence Data Center
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 v…
EPSS: 0.940 (99.9th percentile) — read the EPSS interpretation.
Affected products
- Atlassian Confluence Data Center — versions unspecified, 7.5.0
- Atlassian Confluence Server — versions unspecified, 7.5.0
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Known ransomware campaign use: yes.
Public proof-of-concept exploits
References
- jira.atlassian.com/browse/CONFSERVER-67893 (x_refsource_MISC)
- packetstormsecurity.com/files/164401/Atlassian-Confluence-Server-7.5.1-Arbitrar… (x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-26085?
- CVE-2021-26085 is a vulnerability in Atlassian Confluence Data Center. Published 2021-08-03.
- Is CVE-2021-26085 known to be exploited?
- Yes. CVE-2021-26085 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-28), indicating it is being actively exploited. 51 public proof-of-concept repositories are indexed.