Reachable Assertion Affecting pdns-recursor package, versions [5.3.0-alpha0,5.3.3)[5.4.0-alpha0,]
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Test your applications- Snyk IDSNYK-UNMANAGED-PDNSRECURSOR-14241652
- published9 Dec 2025
- disclosed9 Dec 2025
- creditUnknown
Introduced: 9 Dec 2025
NewCVE-2025-59029 (opens in a new tab)Common Vulnerabilities and Exposures (CVE) are common identifiers for publicly known security vulnerabilities
Common Weakness Enumeration (CWE) is a category system for software weaknesses
How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Reachable Assertion via the cache management process. An attacker can cause a service disruption by sending specially crafted DNS record requests, allowing them to be inserted into the cache, and subsequently issuing a query with the qtype parameter set to ANY.
Workaround
This vulnerability can be avoided by blocking all requests with qtype of ANY.