[NEW] [medium] Netty: Multiple vulnerabilities allow denial of service
An attacker can exploit multiple vulnerabilities in Netty to conduct a denial of service attack.
CSIRTS triage
- What
- Multiple vulnerabilities allow an attacker to conduct denial of service attacks.
- Who is affected
- All users of Netty are potentially affected by these vulnerabilities.
- Urgency
- Remediation is important as these vulnerabilities can lead to service disruptions, although exploitation is not currently reported.
- Action
- Update to the latest version of Netty to mitigate these vulnerabilities.
AI-assisted analysis generated from the source advisory — verify against the original.
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Details
Original advisory: https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2026-2511
Recent advisories for Netty
A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.
- highGHSA-93wv-jw9v-4972: Netty: HTTP/2 decompression leaks ByteBuf reference count when the decompressor channel i…ghsa · 2026-07-31
- medium[NEW] [medium] Netty: Multiple vulnerabilitiescert-bund · 2026-07-30
- high[NEW] [high] Netty: Multiple vulnerabilitiescert-bund · 2026-07-30
- high[UPDATE] [high] Netty: Multiple vulnerabilitiescert-bund · 2026-07-30
- unknownCVE-2026-59898: Netty is an asynchronous, event-driven network application framework. Prior to versions 4.1.13…nvd · 2026-07-29
- mediumCVE-2026-59920: Netty is an asynchronous, event-driven network application framework. In versions prior to 4.1…nvd · 2026-07-29
More from CERT-Bund (BSI) Security Advisories
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- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow denial of service2026-07-31
- medium[UPDATE] [medium] Linux Kernel: Multiple vulnerabilities allow unspecified attack2026-07-31