CVE-2026-23991: medium-severity vulnerability in theupdateframework go-tuf
go-tuf affected by client DoS via malformed server response
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.9epss 0.6%
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:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
theupdateframework · go-tufRelated CVEs — theupdateframework go-tuf
In the same product, most dangerous first.
CVE-2022-29173HIGHNo protection against rollback attacks in go-tufEPSS 0.6%CVE-2024-47534HIGHIncorrect delegation lookups can make go-tuf download the wrong artifactEPSS 0.5%CVE-2026-24686MEDIUMgo-tuf Path Traversal in TAP 4 Multirepo Client Allows Arbitrary File Write via Malicious Repository NamesEPSS 0.2%CVE-2026-23992MEDIUMgo-tuf improperly validates the configured threshold for delegationsEPSS 0.2%