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CVE-2021-26085CISA KEV

Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

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

CISA KEVVendor advisoryNVD

CISA catalog record

Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint.

Product
Confluence Server
Added to KEV
28 Mar 2022
Federal remediation due
18 Apr 2022
Known ransomware use
Yes

What changed

First observed 14 Oct 2026

No field changes in the recorded history.

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ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 14 Oct 19:01 UTC · 254 of 255 readable · 253 fully read · documentation 0/409 current

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