CVE-2021-26084 is a critical OGNL injection vulnerability affecting Atlassian Confluence Server and Data Center, allowing unauthenticated attackers to execute arbitrary code. With a CVSS score of 9.8 (CRITICAL), it presents a severe risk due to its network-based attack vector, low complexity, and complete compromise of confidentiality, integrity, and availability. This vulnerability is actively exploited, including in known ransomware campaigns, and has readily available exploit code in tools like Metasploit and Nuclei, along with significant community discussion and media coverage.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.13.23CPE matchmatch criteria | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* | ||
>= 6.14.0, < 7.4.11CPE matchmatch criteria | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* | ||
>= 7.5.0, < 7.11.6CPE matchmatch criteria | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* | ||
>= 7.12.0, < 7.12.5CPE matchmatch criteria | cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:* | ||
< 6.13.23CPE matchmatch criteria | cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.