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Advisory record · GHSA-4ph6-mjv7-3fq6

netfoil vulnerable to improper handling of untrusted DoH response data

CVSS 4.0, no score published

Published by the GitHub Advisory Database at 24 Aug 2026, 20:43 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/tinfoil-factory/netfoilGo<0.5.00.5.0
Identifiers
GHSA-4ph6-mjv7-3fq6 · GO-2026-6277
Weakness (CWE)
CWE-117
Tags
Published
24 Aug 2026
Updated
26 Aug 2026

Machine-written summary

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

netfoil, a Go package, is affected in versions before 0.5.0. The source describes improper handling of HTTPS RR data from a DoH server: unverified APLN data, which can contain arbitrary bytes, was written directly to the log, and it could cause unnecessary memory usage. The source gives few details on the attacker's position or required access. Upgrade to netfoil 0.5.0 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
Not published None 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:49 UTC First seen by agentprime
  2. 31 Oct 2026, 14:49 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.