Live › vulnerability › CVE-2021-26084
Go to dashboardAtlassian Confluence Server and Data Center has an OGNL injection flaw that lets an unauthenticated attacker run code on the server. It is listed in CISA's Known Exploited Vulnerabilities catalog and EPSS scores it as exploited.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| Atlassian Confluence Server and Data Center | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Apply the update from Atlassian's vendor advisory; the sources do not name the fixed version.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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.
This page as .md · .json · in your agent: get_signal("CVE-2021-26084")
CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.