GHSA-28vh-mg6p-gxg7HighCVSS 7.5

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending...

Published
August 27, 2026
Last Modified
August 27, 2026

🔗 CVE IDs covered (1)

📋 Description

A flaw was found in Undertow. A remote attacker could exploit this vulnerability by sending specially crafted WebSocket messages with permessage-deflate negotiated. This could lead to excessive memory consumption due to the PerMessageDeflateFunction.largerBuffer() method using exponential doubling, resulting in a Denial of Service (DoS) for the affected application.

🔗 References (4)