CVE-2026-1528
ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length.
Published Mar 12, 2026 · updated Sep 4, 2026 · nodejs undici
ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.
Code
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Timeline
Detection, updates, and resolution for this record.
Mar 12, 2026 · NIST NVD
Detected
ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.
Sep 4, 2026 · NIST NVD
Updated
ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version v7.24.0 and v6.24.0. Users should upgrade to this version or later.
Affected
- cpe nodejs/undiciversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-1528
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-2026-1528
ImpactA server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws a fatal TypeError that terminates the process. Patches Patched in the undici version
nvd.nist.gov