Is CVE-2026-1528 actively exploited?

No active exploitation of CVE-2026-1528 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-1528 be exploited remotely?

Yes. CVE-2026-1528 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-1528?

CVE-2026-1528 has a CVSS score of 7.5 (HIGH).

HOME VULNERABILITIESCVE-2026-1528

HIGH

CVE-2026-1528

CWE-248Published: March 12, 2026· Updated: Mar 13, 2026

7.5

CVSS v3.1

EPSS:0.06%probability of exploitation in 30 daysPercentile:17.3th

Official Description

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.

NVD Source

Technical Analysis

CVE-2026-1528 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.