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CVE-2021-26084CISA KEV

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

CISA lists this Atlassian Confluence Server and Data Center vulnerability as known exploited. The vendor's advisory has the fixed versions.

CISA KEVVendor advisoryNVD

CISA catalog record

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

Product
Confluence Server and Data Center
Added to KEV
3 Nov 2021
Federal remediation due
17 Nov 2021
Known ransomware use
Yes

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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ChangeIntel

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Sources read 14 Oct 14:57 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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