CVE Watch30 jun 2026

CVE-2025-9784

A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This i

CVSS

7.5

Alto

EPSS

2.2%

p80

KEV

—

Exploit Today

0-100

Publicado: 2 sept 2025 · Última mod.: 30 jun 2026 · CWE-770 · CWE-404

EPSS · 30d

2.2%EPSS · 30 días2.2%

2026-06-302026-07-16

Descripción técnica

A flaw was found in Undertow where malformed client requests can trigger server-side stream resets without triggering abuse counters. This issue, referred to as the "MadeYouReset" attack, allows malicious clients to induce excessive server workload by repeatedly causing server-side stream aborts. While not a protocol bug, this highlights a common implementation weakness that can be exploited to cause a denial of service (DoS).

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