Path Traversal in Theupdateframework Go-Tuf
CVE-2026-24686
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.
Vulnerability class: Path Traversal (Directory Traversal)
EPSS: 0.002 (11.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.
Affected products
- Theupdateframework Go-tuf — versions >= 2.0.0, < 2.4.1
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-24686?
- CVE-2026-24686 is a medium-severity vulnerability in Theupdateframework Go-Tuf, classified under Path Traversal. CVSS score: 4.7/10. Published 2026-01-27.
- How severe is CVE-2026-24686?
- Medium severity. CVSS v3 base score is 4.7 out of 10.