EUVD-2026-95108Published

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 …

Exact source revision recorded 5 Nov 2026 03:58:15 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

euvd · EUVD-2026-95108

Published

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 elements to be decoded repeatedly, producing quadratic CPU use and blocking the event loop. 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, 5:07:03 PM

dateUpdated: Oct 8, 2026, 5:26:27 PM

1 related source bulletins · separate from aliases

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

CVE-2026-107297

Source published: Oct 8, 2026, 5:07:03 PM (timezone not stated)
Source modified: Oct 8, 2026, 5:26:27 PM (timezone not stated)
Observed here: 5 Nov 2026 03:58:15 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 · 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H