CVE-2026-33261 Affecting pdns-recursor package, versions <5.3.6-r0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-ALPINE323-PDNSRECURSOR-16322630
- published30 Apr 2026
- disclosed22 Apr 2026
Introduced: 22 Apr 2026
CVE-2026-33261 (opens in a new tab)How to fix?
Upgrade Alpine:3.23 pdns-recursor to version 5.3.6-r0 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pdns-recursor package and not the pdns-recursor package as distributed by Alpine.
See How to fix? for Alpine:3.23 relevant fixed versions and status.
A zone transition from NSEC to NSEC3 might trigger an internal inconsistency and cause a denial of service.