Vulnerability Description
go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, if the TUF repository (or any of its mirrors) returns invalid TUF metadata JSON (valid JSON but not well formed TUF metadata), the client will panic during parsing, causing a denial of service. The panic happens before any signature is validated. This means that a compromised repository/mirror/cache can DoS clients without having access to any signing key. Version 2.3.1 fixes the issue. No known workarounds are available.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Theupdateframework | Go-Tuf | >= 2.0.0, < 2.3.1 |
Related Weaknesses (CWE)
References
- https://github.com/theupdateframework/go-tuf/commit/73345ab6b0eb7e59d525dac17a42Patch
- https://github.com/theupdateframework/go-tuf/releases/tag/v2.3.1Release Notes
- https://github.com/theupdateframework/go-tuf/security/advisories/GHSA-846p-jg2w-Vendor Advisory
FAQ
What is CVE-2026-23991?
CVE-2026-23991 is a vulnerability with a CVSS score of 5.9 (MEDIUM). go-tuf is a Go implementation of The Update Framework (TUF). Starting in version 2.0.0 and prior to version 2.3.1, if the TUF repository (or any of its mirrors) returns invalid TUF metadata JSON (vali...
How severe is CVE-2026-23991?
CVE-2026-23991 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-23991?
Check the references section above for vendor advisories and patch information. Affected products include: Theupdateframework Go-Tuf.