2 lines
2.2 KiB
JSON
2 lines
2.2 KiB
JSON
{"affected":[{"affectedData":[{"product":"msgpack-ruby","vendor":"msgpack","versions":[{"status":"affected","version":"< 1.8.7"}]}],"source":"security-advisories@github.com"}],"cveTags":[],"descriptions":[{"lang":"en","value":"MessagePack for Ruby is an implementation of the MessagePack binary serialization format. Prior to 1.8.7, the Java-platform msgpack gem for JRuby allocated arrays and byte buffers directly from attacker-controlled array32, str32, and bin32 declared sizes before confirming that corresponding elements or bytes were available. A short MessagePack header could therefore trigger a very large allocation or sustained heap growth when an application decoded untrusted input through MessagePack.unpack or MessagePack::Unpacker, potentially exhausting the shared JVM heap. map32 and declared counts at or above 2^31 did not use the affected allocation behavior. This issue is fixed in version 1.8.7."}],"id":"CVE-2026-126366","lastModified":"2026-11-13T00:20:12.397","metrics":{"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":3.6,"source":"security-advisories@github.com","type":"Secondary"}]},"published":"2026-11-13T00:20:12.397","references":[{"source":"security-advisories@github.com","url":"https://github.com/msgpack/msgpack-ruby/commit/ca0efc1256c687b428c46dd68ce000ff515d53f2"},{"source":"security-advisories@github.com","url":"https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.6"},{"source":"security-advisories@github.com","url":"https://github.com/msgpack/msgpack-ruby/releases/tag/v1.8.7"},{"source":"security-advisories@github.com","url":"https://github.com/msgpack/msgpack-ruby/security/advisories/GHSA-73v3-wf97-vpgj"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Received","weaknesses":[{"description":[{"lang":"en","value":"CWE-770"},{"lang":"en","value":"CWE-1325"}],"source":"security-advisories@github.com","type":"Primary"}]}
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