FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

PowerDNS -- Multiple vulnerabilities

Affected packages
powerdns < 5.0.5

Details

VuXML ID 0823ac26-6040-11f1-ba4a-50ebf6bdf8e9
Discovery 2026-05-20
Entry 2026-06-04

PowerDNS Team reports:

2025-07: Internal logic flaw in cache management can lead to a denial of service in Recursor

When using views, queries sent using TCP Proxy Protocol will select the view according to the address of the proxy, rather than the address of the initial query. This can lead to wrong data being returned.

Missing escaping of special characters (such as $ or @) in DNS names received during an AXFR operation can lead to an incorrect (non-parseable) Bind backend configuration to be written, causing this backend to fail until manual operation is performed to fix the configuration.

Missing sanity checks of the answer to the initial SOA query, when running in auto-secondary mode and receiving a notification for an not-yet-known domain may cause the server to crash.

Multiple concurrency and locking defects in the GSS-TSIG code can lead to memory corruption due to accidental data structure sharing, which can in turn lead to a program crash.

Missing proper escaping of double-quote characters when computing labels will cause AXFR of a catalog zone with a member whose producer group option contains such a character to fail.

References

CVE Name CVE-2026-41999
CVE Name CVE-2026-42000
CVE Name CVE-2026-42001
CVE Name CVE-2026-42002
CVE Name CVE-2026-42396
URL https://doc.powerdns.com/authoritative/security-advisories/powerdns-advisory-2026-06.html