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CVE Vulnerability Details :
CVE-2026-50009
PUBLISHED
More InfoOfficial Page
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
View Known Exploited Vulnerability (KEV) details
Published At-12 Jun, 2026 | 14:47
Updated At-12 Jun, 2026 | 16:09
Rejected At-
▼CVE Numbering Authority (CNA)
Netty QUIC stateless reset token material exposed through header-visible connection IDs

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
Vendor
The Netty Projectnetty
Product
netty
Versions
Affected
  • >= 4.2.0.Final, < 4.2.15.Final
Problem Types
TypeCWE IDDescription
CWECWE-200CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWECWE-330CWE-330: Use of Insufficiently Random Values
Type: CWE
CWE ID: CWE-200
Description: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
Type: CWE
CWE ID: CWE-330
Description: CWE-330: Use of Insufficiently Random Values
Metrics
VersionBase scoreBase severityVector
3.14.8MEDIUM
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Version: 3.1
Base score: 4.8
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/netty/netty/security/advisories/GHSA-cq4q-cv5g-r8q5
x_refsource_CONFIRM
https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
x_refsource_MISC
Hyperlink: https://github.com/netty/netty/security/advisories/GHSA-cq4q-cv5g-r8q5
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/netty/netty/releases/tag/netty-4.2.15.Final
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Details not found