msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the decoder reads the four-byte length of a map32 value before validating that the complete five-byte header is available. A truncated map32 header therefore causes a checked out-of-bounds buffer...
Product
mcollina msgpack5 vulnerabilities
8 published CVES affecting mcollina msgpack5, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
- Total
- 8
- Critical
- 0
- High
- 3
- Medium
- 4
- Low
- 1
- Unscored
- 0
- CISA KEV
- 0
Latest mcollina msgpack5 CVEs
Newest publication first
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HighCVSS 7.5 EPSS 0.52%
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MediumCVSS 6.5 EPSS 0.37%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, constructing msgpack5 with an empty or partial options object disables the default protoAction: 'error' protection. A decoded map containing a proto key can then replace the decoded object's prot...
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HighCVSS 7.5 EPSS 0.43%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder recursively invokes itself for each complete MessagePack value remaining in a chunk. A remote peer can send one chunk containing many small valid values, causing recursion p...
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MediumCVSS 5.9 EPSS 0.39%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder treats the reserved MessagePack byte 0xc1 as incomplete input instead of invalid input. When 0xc1 begins a stream, subsequent data remains buffered while the decoder waits f...
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MediumCVSS 5.3 EPSS 0.37%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the array and map decoding paths have no nesting-depth limit, allowing an attacker who can provide MessagePack input to submit deeply nested containers that exhaust the JavaScript call stack and...
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MediumCVSS 5.9 EPSS 0.39%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, the streaming decoder reparses an incomplete array or map from the beginning whenever another chunk arrives. A remote peer can split one valid MessagePack container across many small chunks, caus...
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LowCVSS 3.7 EPSS 0.28%
msgpack5 is a msgpack v5 implementation for node.js and the browser. Prior to 6.1.0, decoding a negative signed 64-bit integer modifies the corresponding bytes in the caller-provided input buffer while computing the value. Applications that retain or reuse encoded input for integ...
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CVE-2021-21368 Prototype poisoning
PublishedHighCVSS 8.8 EPSS 1.6%msgpack5 is a msgpack v5 implementation for node.js and the browser. In msgpack5 before versions 3.6.1, 4.5.1, and 5.2.1 there is a "Prototype Poisoning" vulnerability. When msgpack5 decodes a map containing a key "proto", it assigns the decoded value to proto. Object.prototype.p...
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.