UBUNTU-CVE-2026-24686

Description

go-tuf is a Go implementation of The Update Framework (TUF). go-tuf's TAP 4 Multirepo Client uses the map file repository name string (`repoName`) as a filesystem path component when selecting the local metadata cache directory. Starting in version 2.0.0 and prior to version 2.4.1, if an application accepts a map file from an untrusted source, an attacker can supply a `repoName` containing traversal (e.g., `../escaped-repo`) and cause go-tuf to create directories and write the root metadata file outside the intended `LocalMetadataDir` cache base, within the running process's filesystem permissions. Version 2.4.1 contains a patch.

CVSS Metrics

• v3.1•MEDIUM•Score: 4.7CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected Systems

• ubuntu•golang-github-theupdateframework-go-tuf

  all | all | all

References (4)

• https://ubuntu.com/security/CVE-2026-24686
• https://www.cve.org/CVERecord?id=CVE-2026-24686
• https://github.com/theupdateframework/go-tuf/security/advisories/GHSA-jqc5-w2xx-5vq4
• https://github.com/theupdateframework/go-tuf/commit/d361e2ea24e427581343dee5c7a32b485d79fcc0