CVE-2026-123573
Last modified
CVE-2026-123573 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser. Attackers can supply untrusted zone files where only a single or double quote replaces a service parameter value, triggering a panic that crashes the parsing process..
Description
hickory-dns from 0.20.1 before 0.26.2 contains a denial of service vulnerability in the hickory-proto SVCB and HTTPS record presentation format parser. Attackers can supply untrusted zone files where only a single or double quote replaces a service parameter value, triggering a panic that crashes the parsing process.
Metrics
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| hickory-dns | hickory-dns | >= 0.20.1, < 0.26.2 |
References
Timeline
- Published
- Last Modified
- Status
- Received
Frequently Asked Questions
What is CVE-2026-123573?
How severe is CVE-2026-123573?
How do I fix CVE-2026-123573?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-123568Sveltejs devalue before 5.6.3 contains a prototype pollution…4.4
- CVE-2026-123569The devalue package for npm before 5.6.3 can consume excessi…7.5
- CVE-2026-12357Heimdall Data Database Proxy generateFileContent CRLF Inject…7.2
- CVE-2026-123570The DNS wire-format message parser in hickory-proto (Hickory…7.5
- CVE-2026-123571Hickory DNS from 0.26.0 before 0.26.2 contains an integer un…7.5
- CVE-2026-123572Hickory-dns from 0.20.1 before 0.26.2 contains a denial of s…7.5
- CVE-2026-123574The zone file parser in the hickory-proto crate of Hickory D…7.5
- CVE-2026-123575Hickory DNS before 0.26.2 contains a resource exhaustion vul…7.5
- CVE-2026-123576Hickory DNS 0.24.0 through 0.26.1 contains a memory exhausti…7.5
- CVE-2026-123577Hickory DNS from 0.24.0 before 0.26.2 contains a resource ex…7.5
- CVE-2026-123578Hickory DNS hickory-net 0.26.0 before 0.26.2 and hickory-pro…3.7
- CVE-2026-123579DNSSEC validation in Hickory DNS hickory-net 0.26.0-beta.1 b…3.7
Are you affected by CVE-2026-123573?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST