CVE-2026-33259 Concurrent modification of RPZ data can lead to denial of servce

Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider...

CVE-2026-33259

CVE-2026-33259 affects PowerDNS Recursor RPZ handling. The issue arises when there are many concurrent transfers of the same RPZ, which can lead to inconsistent RPZ data, use-after-free, or a crash of the recursor. The root cause is described as concurrent transfers of the same RPZ zone occurring...

CVE-2026-33259

Having many concurrent transfers of the same RPZ can lead to inconsistent RPZ data, use after free and/or a crash of the recursor. Normally concurrent transfers of the same RPZ zone can only occur with a malfunctioning RPZ provider...

PT-2026-34323

Name of the Vulnerable Software and Affected Versions Unbound affected versions not specified Description Concurrent transfers of the same Response Policy Zone RPZ can result in inconsistent RPZ data, use after free a memory corruption issue where a program continues to use a pointer after it has...