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CVE-2021-26084Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability

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.

9.8 CRITICALEPSS 99.99%⚡ Known Exploited (CISA KEV)NVD: Analyzed

OverviewAffected ProductsReferences
NVD CVE.org

Overview

Severity

ScoreSeverityVersionVector String
9.8CRITICAL3.1NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5HIGH2.0NVDAV:N/AC:L/Au:N/C:P/I:P/A:P

CISA required action

⚡ Known exploited · remediation due Nov 17, 2021

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Details

CVE ID
CVE-2021-26084
Status
Analyzed
Assigner (CNA)
atlassian
Published
Aug 30, 2021
Last modified
2026-06-17 03:42 UTC
Weaknesses

Sources

Refreshed hourly from the sources above. Last fetched 2026-11-08 09:49 UTC.