CVE-2026-93657hickory-resolver before 0.26.2 DNSSEC Validation Bypass
Updated under an hour ago ()
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It affects hickory-dns hickory-resolver. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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hickory-resolver versions before 0.26.2 fail to propagate bogus DNSSEC proof states through the Resolver::lookup() and Resolver::lookup_ip() APIs, allowing invalid records to be returned as successful results. Attackers controlling the answering zone or positioned on the network path can have forged DNS records accepted as validated, bypassing DNSSEC authentication checks.
- CVSS
- 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- Weakness (CWE)
- CWE-347
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- VulnCheck
- NVD analysis
- Deferred
- Record last updated
- Sep 21, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
hickory-dns hickory-resolver hickory_dns:hickory_resolver (from the name) | before 0.26.2; 0.26.2 not affected | CNA record |
References
- https://github.com/hickory-dns/hickory-dns/security/advisories/GHSA-5j98-2g5x-46v6vendor-advisory
- https://github.com/hickory-dns/hickory-dns/commit/30720f4fb22e5556ecbf26d2c8274ea4a9fdd238patch
- https://github.com/hickory-dns/hickory-dns/pull/3871patch, issue-tracking
- https://github.com/hickory-dns/hickory-dns/releases/tag/v0.26.2release-notes
- https://github.com/hickory-dns/hickory-dnsproduct
- https://www.vulncheck.com/advisories/hickory-resolver-before-0.26.2-dnssec-validation-bypassthird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.