AEGLIX vulnerability intelligence
CVE-2021-26084
CRITICAL · CVSS 9.8 · Analyzed
Published: 2021-08-30 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance. The affected versions are before version 6.13.23, from version 6.14.0 before 7.4.11, from version 7.5.0 before 7.11.6, and from version 7.12.0 before 7.12.5.
Severity and scoring
- CVSS score
- 9.8 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-917
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Atlassian · Confluence Server and Data Center
- Added to catalog
- 2021-11-03
- Required action
- Apply updates per vendor instructions.
- CISA remediation due date
- 2021-11-17
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
Before (exclusive): 6.13.23
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
From (inclusive): 6.14.0
Before (exclusive): 7.4.11
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
From (inclusive): 7.5.0
Before (exclusive): 7.11.6
cpe:2.3:a:atlassian:confluence_data_center:*:*:*:*:*:*:*:*
From (inclusive): 7.12.0
Before (exclusive): 7.12.5
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
Before (exclusive): 6.13.23
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
From (inclusive): 6.14.0
Before (exclusive): 7.4.11
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
From (inclusive): 7.5.0
Before (exclusive): 7.11.6
cpe:2.3:a:atlassian:confluence_server:*:*:*:*:*:*:*:*
From (inclusive): 7.12.0
Before (exclusive): 7.12.5
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and references
- http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html
Exploit · Third Party Advisory · VDB Entry
- https://jira.atlassian.com/browse/CONFSERVER-67940
Issue Tracking · Patch · Vendor Advisory
- http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html
Exploit · Third Party Advisory · VDB Entry
- https://jira.atlassian.com/browse/CONFSERVER-67940
Issue Tracking · Patch · Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-26084
US Government Resource