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CVE-2021-26085 is a pre-authorization arbitrary file read vulnerability in Atlassian Confluence Server. A remote, unauthenticated attacker can abuse the /s/ endpoint to access restricted resources and read files without prior authentication. The issue affects Confluence Server versions before 7.4.10 and versions from 7.5.0 before 7.12.3. The vulnerability breaks Confluence access controls by allowing retrieval of resources that should be restricted, exposing sensitive application or system data to an external attacker.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No valid public exploits. Mallory filtered out 2 candidates as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Confluence vulnerability listed among issues suspected to be exploited by Iran-linked actors; the content notes Confluence issues remain widely exploitable and useful as scalable entry points.
An Atlassian Confluence arbitrary file read vulnerability targeted in campaigns delivering cryptocurrency-mining malware.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.