CVE-2026-100665

Severity: Important

Published: 2026-09-26

Netty versions from 4.2.11.Final before 4.2.18.Final contain an incomplete hostname verification fix in the QUIC certificate verification path when using a plain X509TrustManager.

Exploit evidence

Public proof of concept reported

Last checked: 2026-10-02 16:48 UTC

Proof of concept · CISA Coordinator (Assessed 2026-10-02 15:46 UTC)

NVD evidence for CVE-2026-100665 is reported, not independently verified by Package Alert. It does not establish exploit reliability or applicability to a particular package or environment.

References

Fix Status by Distribution

Fix evidence last checked: 2026-09-26 22:17 UTC

Fixed in:

Debian 12 (Bookworm)
- Debian Security Tracker · Observed 2026-09-26
Debian 13 (Trixie)
- Debian Security Tracker · Observed 2026-09-26

No fix evidence found:

AlmaLinux 10

AlmaLinux 8

AlmaLinux 9

Debian 11 (Bullseye)

Oracle Linux 10

Oracle Linux 8

Oracle Linux 9

Red Hat Enterprise Linux 10

Red Hat Enterprise Linux 7 (Extended Lifecycle Support)

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 9

Rocky Linux 10

Rocky Linux 8

Rocky Linux 9

SUSE Linux Enterprise Server 12 SP5

SUSE Linux Enterprise Server 15 SP5

SUSE Linux Enterprise Server 15 SP6

SUSE Linux Enterprise Server 15 SP7

SUSE Linux Enterprise Server 16

Ubuntu 22.04 LTS (Jammy Jellyfish)

Ubuntu 24.04 LTS (Noble Numbat)

Ubuntu 25.04 (Plucky Puffin)

Ubuntu 25.10 (Questing Quokka)

Ubuntu 26.04 LTS (Resolute Raccoon)

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