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CVE-2026-18536 affects Perl Data::Entropy versions before 0.010. The vulnerability arises from the use of remote entropy sources over plain HTTP in the Data::Entropy::RawSource::RandomOrg and Data::Entropy::RawSource::RandomnumbersInfo components, combined with a trivially bypassable integrity check in the RandomOrg source implementation that accepts any non-empty byte string. When an application selects one of these remote sources via with_entropy_source, an on-path attacker can intercept and replace the server response, causing attacker-chosen data to be consumed as entropy. As a result, the values returned by rand_bits and rand_int can be fully influenced by the attacker. The attacker can also control the response evaluated by the _checkbuf method, allowing manipulation of retry and sleep behavior.
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What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories and community write-ups. News coverage will land here when it surfaces.
No news coverage yet. Advisories and community discussion only.
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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.