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…
Exact source revision recorded 7 Nov 2026 04:31:08 UTC. It does not establish the source's current position. Latest evidence.
euvd · EUVD-2026-95111
Publishedmsgpack5 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 proportional to the value count, exhausting the JavaScript call stack, and interrupting the process or stream. This issue is fixed in version 6.1.0.
EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON.
Original publisher date fields
datePublished: Oct 8, 2026, 5:11:13 PM
dateUpdated: Oct 8, 2026, 5:52:48 PM
1 related source bulletins · separate from aliases
msrc_CVE-2026-107300: msgpack5: Many buffered values can exhaust the streaming decoder stack
CVE-2026-107300
- Source published
- Oct 8, 2026, 5:11:13 PM (timezone not stated)
- Source modified
- Oct 8, 2026, 5:52:48 PM (timezone not stated)
- Observed here
- 7 Nov 2026 04:31:08 UTC
- Source terms
- ENISA EUVD · source terms and attribution apply
Original source record · Cite this exact observation · Complete original publisher JSON
This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.
EUVD CVSS 3.1 · 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H