Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-x845-2f78-7v36

Blocky DNSSEC validation bypass and validation-cache scope pollution

CVSS 8.6 High

Published by the GitHub Advisory Database at 19 Jun 2026, 20:47 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/0xERR0R/blockyGo>=0.28.0, <0.32.00.32.0
Identifiers
GHSA-x845-2f78-7v36 · GO-2026-5745
Weakness (CWE)
CWE-346 · CWE-807
Tags
Published
19 Jun 2026
Updated
25 Jun 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

GHSA-x845-2f78-7v36: Blocky, the Go package github.com/0xERR0R/blocky, versions from 0.28.0 before 0.32.0 are affected. With DNSSEC validation enabled, Blocky can accept and cache forged unsigned DNS answers from an untrusted upstream, and it can cache an insecure validation state keyed only by domain name. An attacker who controls or tampers with upstream responses can thereby poison answers that clients later receive from cache. Upgrade to version 0.32.0 or later.

Written 6 Nov 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.6 High 3.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:L GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 15:06 UTC First seen by agentprime
  2. 31 Oct 2026, 15:06 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.