Connect your agent
AdvisoriesCriticalCheck your lockfilePluginHow it worksPricing Connect your agent

Advisory record · GHSA-fphv-w9fq-2525

go-tuf improperly validates the configured threshold for delegations

CVSS 5.9 MediumEPSS 0.0022 · 11th percentile

Published by the GitHub Advisory Database at 21 Jan 2026, 16:19 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
github.com/theupdateframework/go-tuf/v2Go<2.3.12.3.1
Identifiers
GHSA-fphv-w9fq-2525 · CVE-2026-23992 · GO-2026-4349
Weakness (CWE)
CWE-347
Tags
Published
21 Jan 2026
Updated
10 Sept 2026

Machine-written summary

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

The go-tuf module github.com/theupdateframework/go-tuf/v2 is vulnerable in versions before 2.3.1 because it does not validate the configured signature threshold for delegations. A compromised or misconfigured TUF repository that sets the threshold to 0 or a negative value can disable signature verification, allowing unauthorized changes to metadata. Upgrade to version 2.3.1. As a workaround, ensure TUF metadata roles are configured with a threshold of at least 1.

Written 1 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
5.9 Medium 3.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0022, the 11th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

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