Netty QUIC stateless reset token material exposed through header-visible connection IDs
Published Jun 12, 2026
4.8
MEDIUMCVSS 3.1
EPSS 0.32%
Description
Netty is a network application framework for development of protocol servers and clients. Prior to version 4.2.15.Final, Netty QUIC exposes the stateless reset token on the network path when using the default HMAC-based connection-ID and stateless-reset-token generators. The reset token for the server's current source connection ID can be derived from bytes that appear as the connection ID in QUIC headers after a source-CID rotation. An on-path attacker observing the headers can use the token to perform a Denial of Service by sending a spoofed Stateless Reset packet. Version 4.2.15.Final patches the issue.
Affected products
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- Version >= 4.2.0.Final, < 4.2.15.FinalStatusaffectedConstraints-
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (4)
- https://github.com/advisories/GHSA-cq4q-cv5g-r8q5 Advisory
- https://github.com/netty/netty/releases/tag/netty-4.2.15.Final x_refsource_MISCRelease Notes
- https://github.com/netty/netty/security/advisories/GHSA-cq4q-cv5g-r8q5 x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-50009
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-cq4q-cv5g-r8q5 | Advisory | |
| https://github.com/netty/netty/releases/tag/netty-4.2.15.Final | x_refsource_MISCRelease Notes | |
| https://github.com/netty/netty/security/advisories/GHSA-cq4q-cv5g-r8q5 | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2026-50009 |
Change history (0)
No recorded changes yet.