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stream-json has a prototype pollution issue: Assembler writes this.current[this.key] on plain objects

CVE-2026-104183 affects stream-json. CVSS base score 5.1 (GitHub Advisory Database). EPSS 0.00195 (percentile 0.08312), scored 2026-10-04. Affected range: < 3.6.0. Fixed version: 3.6.0.

Published 2026-10-05 23:14:26.566596+00:00

CVE

CVE-2026-104183

Product

stream-json

CCR priority

20.4 /100 (P4)

CVSS

5.1 /10 · CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L · GitHub Advisory Database

EPSS

0.00195 · percentile 0.08312 · 2026-10-04

KEV

no

Affected products

• stream-json · < 3.6.0 · Fixed version: 3.6.0

Provenance

• GitHub Advisory Database · Source record · observed 2026-10-05 23:10:51.172112+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-104183.html