CVE-2026-107298 msgpack5: Deeply nested input can exhaust the decoder stack

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 interrupt a...

@forwardemail/wildduck (>=1.40.10, <=4.0.3), @johnqh/haraka (>=8.0.1, <=8.0.17) +13 more potentially affected by CVE-2026-107298 via msgpack5 (>=6.0.1, <=6.0.2)

msgpack5 NPM version =6.0.1, =1.40.10, =8.0.1, =7.0.0, =5.8.38, =1.0.0, =1.0.0-alpha.1, =5.8.30, =0.0.1, =1.46.1, =1.32.21, =2.60.1, =1.1.0, =1.38.0, =1.1.0, =1.32.21 Source cves: CVE-2026-107298 Source advisory: MEND:CVE-2026-107298...

EUVD-2026-95109

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 interrupt a...

EUVD-2026-95108

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, causing completed...

CVE-2026-107297 msgpack5: Quadratic parsing in the streaming decoder

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, causing completed...

CVE-2026-107297

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, causing completed...

@forwardemail/wildduck (>=1.40.10, <=4.0.3), @johnqh/haraka (>=8.0.1, <=8.0.17) +13 more potentially affected by CVE-2026-107297 via msgpack5 (>=6.0.1, <=6.0.2)

msgpack5 NPM version =6.0.1, =1.40.10, =8.0.1, =7.0.0, =5.8.38, =1.0.0, =1.0.0-alpha.1, =5.8.30, =0.0.1, =1.46.1, =1.32.21, =2.60.1, =1.1.0, =1.38.0, =1.1.0, =1.32.21 Source cves: CVE-2026-107297 Source advisory: MEND:CVE-2026-107297...

CVE-2026-107297 msgpack5: Quadratic parsing in the streaming decoder

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, causing completed...

CVE-2026-107297 msgpack5: Quadratic parsing in the streaming decoder

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, causing completed...

CVE-2026-107297

The msgpack5 library (a msgpack v5 implementation for Node.js and the browser) is vulnerable to a quadratic CPU use issue in versions prior to 6.1.0 . The streaming decoder reparses incomplete arrays or maps from the beginning every time a new chunk arrives. A remote peer can exploit this by spli...

CVE-2026-107296

The msgpack5 library, a msgpack v5 implementation for Node.js and the browser , contains a vulnerability in versions prior to 6.1.0 . When decoding a negative signed 64-bit integer , the library modifies the corresponding bytes in the caller-provided input buffer during value computation. This ca...

EUVD-2026-95107

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 integrity checks,...

CVE-2026-107296 msgpack5: Decoding negative int64 values mutates the input buffer

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 integrity checks,...

CVE-2026-107296

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 integrity checks,...

CVE-2026-107296 msgpack5: Decoding negative int64 values mutates the input buffer

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 integrity checks,...

@forwardemail/wildduck (>=1.40.10, <=4.0.3), @johnqh/haraka (>=8.0.1, <=8.0.17) +13 more potentially affected by CVE-2026-107296 via msgpack5 (>=6.0.1, <=6.0.2)

msgpack5 NPM version =6.0.1, =1.40.10, =8.0.1, =7.0.0, =5.8.38, =1.0.0, =1.0.0-alpha.1, =5.8.30, =0.0.1, =1.46.1, =1.32.21, =2.60.1, =1.1.0, =1.38.0, =1.1.0, =1.32.21 Source cves: CVE-2026-107296 Source advisory: MEND:CVE-2026-107296...

CVE-2026-107296 msgpack5: Decoding negative int64 values mutates the input buffer

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 integrity checks,...

PT-2026-108059

Name of the Vulnerable Software and Affected Versions msgpack5 versions prior to 6.1.0 Description The streaming decoder incorrectly treats the reserved MessagePack byte 0xc1 as incomplete input rather than invalid input. When 0xc1 begins a stream, the decoder buffers all subsequent data while...

PT-2026-108060

Name of the Vulnerable Software and Affected Versions msgpack5 versions prior to 6.1.0 Description The streaming decoder recursively invokes itself for each complete MessagePack value remaining in a chunk. A remote peer can send a single chunk containing numerous small valid values, causing...

PT-2026-108056

Name of the Vulnerable Software and Affected Versions msgpack5 versions prior to 6.1.0 Description Decoding a negative signed 64-bit integer modifies the bytes in the input buffer provided by the caller during value computation. This can lead to silent data corruption for applications that reuse ...