msgpack5 is a msgpack v5 implementation for node.js and the browser.
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 for bytes that cannot make the value valid, allowing a remote peer to exhaust memory. This issue is fixed in version 6.1.0.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Node.js
- Product
- Node.js
- CVSS
- 5.9
- Fix
- available
- Exposure class
- Developer platform
Why it ranks 13 (Routine)
- CVSS 5.9 medium
- Product class: developer platform
- Fix available
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.
Links
- NIST National Vulnerability Database (CVE API 2.0) (nvd.nist.gov)
- CVE-2026-107299 on this site · NVD · CVE.org · Vulnpedia
Related coverage
Other items that share a CVE or were clustered with this one.