CVE-2026-123574

rust-hickory-proto: The zone file parser in the hickory-proto crate of Hickory DNS 0.24.0 before 0.26.2 panics when a single token in a z...

CVE-2026-123574 is fixed in rust-hickory-proto on 1 platform by DEBIAN-CVE-2026-123574 (version 0.26.3-1), released November 9, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

n/a

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0034

28th percentile

The zone file parser in the hickory-proto crate of Hickory DNS 0.24.0 before 0.26.2 panics when a single token in a zone file is 4096 bytes or longer. Attackers who can supply untrusted zone files to an application using the parser can trigger the panic to cause a denial of service.

Where it's fixed

Product	Fixed in	Fix	Released
Linux
rust-hickory-proto · Debian 14	0.26.3-1	DEBIAN-CVE-2026-123574	Nov 9, 2026

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