CVE-2026-0398
MEDIUMCVSS 5.3/10EPSS 0.41%
Last modified
CVE-2026-0398 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.. EPSS estimates a 0.41% chance of exploitation in the next 30 days.
Description
Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Powerdns | Recursor | >= 5.1.0, < 5.1.10 |
| Powerdns | Recursor | >= 5.2.8, < 5.2.8 |
| Powerdns | Recursor | >= 5.3.0, < 5.3.5 |
References
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2026-0398?
Crafted zones can lead to increased resource usage and crafted CNAME chains can lead to cache poisoning in Recursor.
How severe is CVE-2026-0398?
CVE-2026-0398 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.41% probability of exploitation in the next 30 days.
How do I fix CVE-2026-0398?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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.
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Are you affected by CVE-2026-0398?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST