CVE-2026-1528 is a denial-of-service vulnerability affecting the nodejs undici library, where a server can send a malformed WebSocket frame with an extremely large 64-bit length. This causes undici's ByteParser to overflow, resulting in a fatal TypeError and process termination. The vulnerability carries a CVSS v3.1 score of 7.5 (HIGH) due to its network-based attack vector, low attack complexity, and high impact on availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion regarding this CVE. Users are advised to upgrade to undici versions v7.24.0 or v6.24.0 to mitigate this risk.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.24.0CPE matchmatch criteria | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* | ||
>= 7.0.0, < 7.24.0CPE matchmatch criteria | cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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