Is CVE-2026-28478 actively exploited?

No active exploitation of CVE-2026-28478 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-28478 be exploited remotely?

Yes. CVE-2026-28478 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-28478?

CVE-2026-28478 has a CVSS score of 7.5 (HIGH).

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HIGH

CVE-2026-28478

CWE-770Published: March 5, 2026· Updated: Mar 9, 2026

7.5

CVSS v3.1

EPSS:0.08%probability of exploitation in 30 daysPercentile:22.5th

Official Description

OpenClaw versions prior to 2026.2.13 contain a denial of service vulnerability in webhook handlers that buffer request bodies without strict byte or time limits. Remote unauthenticated attackers can send oversized JSON payloads or slow uploads to webhook endpoints causing memory pressure and availability degradation.

NVD Source

Technical Analysis

CVE-2026-28478 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.