Unbounded memory allocation by internal web server (CVE-2026-33256)

Summary

Unbounded memory allocation by internal web server

Original description

The description as published by the source.

An attacker can send a web request that causes unlimited memory allocation in the internal web server, leading to a denial of service. The internal web server is disabled by default.

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Fix status by distribution

Fixed packages published by each distribution for this CVE

Debian DEBIAN-CVE-2026-33256 pdns-recursor
Ubuntu UBUNTU-CVE-2026-33256 pdns-recursor

References

advisory docs.powerdns.com
advisory github.com
advisory nvd.nist.gov
package github.com
web repo.powerdns.com