Bug 2524301 (CVE-2026-19538) - CVE-2026-19538 nsd: nsd: Access control bypass via repeated queries on proxy protocol port
Summary: CVE-2026-19538 nsd: nsd: Access control bypass via repeated queries on proxy ...
Keywords:
Status: NEW
Alias: CVE-2026-19538
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2524357 2524358
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-26 09:11 UTC by OSIDB Bzimport
Modified: 2026-08-26 11:40 UTC (History)
0 users

Fixed In Version:
Clone Of:
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Last Closed:
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Description OSIDB Bzimport 2026-08-26 09:11:28 UTC 
The BLOCKED access control list items that are evaluated to deny access on the the proxy protocol port can be bypassed completely when connecting over TCP or TLS and sending the query twice on connection that is kept open.
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