Bug 2506358 (CVE-2026-52686)
| Summary: | CVE-2026-52686 pdns-recursor: pdns-recursor: DNSSEC validation bypass due to unsigned wildcard expansion proofs | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security <prodsec-ir-bot> |
| Status: | NEW --- | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | Keywords: | Security |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in pdns-recursor. This vulnerability allows a remote attacker to bypass DNSSEC (Domain Name System Security Extensions) validation. The flaw occurs because the system accepts wildcard expansion proofs (NSEC/NSEC3 records) without proper signature validation when the wildcard answer is a CNAME (Canonical Name) or DNAME (Delegation Name) record. This can lead to an attacker providing forged DNS responses, potentially resulting in information integrity issues.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2506901, 2506902 | ||
| Bug Blocks: | |||
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Description
OSIDB Bzimport
2026-07-23 09:01:16 UTC
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