CISA Known Exploited Vulnerability

CVE-2021-26084 Ransomware

Atlassian · Confluence Server and Data Center

Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability

Date added 2021-11-03

BOD 22-01 due date 2021-11-17

CWE CWE-917

Ransomware Known

CISA description

Atlassian Confluence Server and Data Server contain an Object-Graph Navigation Language (OGNL) injection vulnerability that may allow an unauthenticated attacker to execute code.

Required action

Apply updates per vendor instructions.

Notes & references

https://nvd.nist.gov/vuln/detail/CVE-2021-26084

Where this lands in 800-53

Vulnerability data triggers these controls during assessment and continuous monitoring.

RA-5 · Vulnerability Monitoring and Scanning
SI-2 · Flaw Remediation
CM-6 · Configuration Settings
SI-7 · Software, Firmware, and Information Integrity
CM-8 · System Component Inventory

External lookups

NVD · CVE-2021-26084
CVE.org · CVE-2021-26084
CISA KEV catalog (canonical)