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CVE-2026-58227 is an uncontrolled-recursion vulnerability in the Erlang/OTP ssl application’s incomplete peer certificate-chain reconstruction during TLS and DTLS handshakes. Certificate-chain processing does not detect issuer cycles or impose a maximum chain depth. A peer-provided unordered pair of mutually cross-signed certificates can cause issuer resolution to alternate indefinitely, recursively extending the call stack and certificate-chain accumulator until process resources are exhausted. Both TLS/DTLS clients and servers are affected while processing peer Certificate handshake messages. Affected releases include OTP 23.2 through versions preceding OTP 27.3.4.15, 28.5.0.4, and 29.0.4; corresponding ssl releases are 10.2 through versions preceding 11.2.12.11, 11.6.0.4, and 11.7.4.
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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.
7 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability in Erlang addressed through a backported fix in the Fedora 43 erlang-26.2.5.21-7.fc43 security update; no technical vulnerability details are provided.
A vulnerability in Erlang addressed through a backported fix in the Fedora 44 erlang-26.2.5.21-7.fc44 security update.
Unknown
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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.