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CVE-2020-1957 is an authentication bypass vulnerability in Apache Shiro affecting versions before 1.5.2. The issue occurs when Apache Shiro is used with Spring dynamic controllers. Under those deployment conditions, a specially crafted request can bypass Shiro's intended authentication enforcement and allow access to resources or controller paths that should require authentication. The provided content does not identify a specific vulnerable function or code path beyond the interaction between Shiro and Spring dynamic controllers.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
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5 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A related Apache Shiro vulnerability referenced for similarity; it affected the shiro-spring module rather than shiro-guice.
A previously disclosed Apache Shiro vulnerability referenced for similarity; the content indicates it affected the shiro-spring module rather than shiro-guice.
An authentication bypass vulnerability in Apache Shiro.
An authentication bypass vulnerability in Apache Shiro before version 1.5.2 when used with Spring dynamic controllers.
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.
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Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.