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CVE-2020-11991 is an XML external entity (XXE) vulnerability in Apache Cocoon's StreamGenerator. When a Cocoon sitemap pipeline invokes StreamGenerator, attacker-controlled XML is parsed with support for external system entities. A crafted XML document can cause the server to resolve an external entity referencing a local resource, resulting in disclosure of files readable by the Cocoon process. Apache Cocoon 2.1.12 is confirmed vulnerable; 2.1.13 is confirmed patched for the tested condition.
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An XML external entity (XXE) vulnerability in Apache Cocoon's StreamGenerator processing that can allow disclosure of local files, demonstrated by reading /etc/passwd through the samples/process-order endpoint on Cocoon 2.1.12.
A vulnerability identified as CVE-2020-11991 affecting Apache Cocoon 2.1.12; the content discusses correcting a detection template for identifying vulnerable instances.
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.