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Moderate severityOSV Advisory· Published Jan 22, 2026· Updated Jan 22, 2026

go-tuf affected by client DoS via malformed server response

CVE-2026-23991

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.

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Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/theupdateframework/go-tuf/v2Go
< 2.3.12.3.1

Affected products

234

Patches

Vulnerability mechanics

References

5

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