CVE-2021-35516 is an uncontrolled resource-consumption vulnerability in the Apache Commons Compress sevenz package. While reading a specially crafted 7Z archive, the parser continuously and unnecessarily allocates file objects, allowing a very small archive to consume excessive heap memory and terminate processing with an out-of-memory error.
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No valid public exploits. Mallory filtered out 1 candidate as fakes, detection scripts, or README-only repos.
All candidate exploits were filtered out by Mallory's validation.
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6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A denial-of-service vulnerability in Apache Commons Compress's sevenz package. A specially crafted 7Z archive can cause excessive memory allocation and an out-of-memory condition, including from small inputs.
Apache Commons Compress excessive-memory-allocation denial of service using a crafted 7Z archive.
Denial-of-service issue in Apache Commons Compress involving excessive memory allocation while reading a specially crafted 7Z archive.
An excessive memory-allocation denial-of-service vulnerability in Apache Commons Compress's sevenz package. A specially crafted 7Z archive causes continuous unnecessary file-object allocation while it is read, potentially exhausting memory even with a small input.
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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.