CVE-2026-23991
Published: July 22, 2026Last modified: July 30, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Notes
skopeo is not affected because it used go-tuf version < 2.0.0 docker-cli-buildx in 25 LTS is not affected because it doesn't use go-tuf dependency
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | skopeo | Not affected (1.10.0-r2) |
| 25 LTS | docker-cli-buildx | Not affected (0.24.0-r0) | |
| skopeo | Not affected (1.18.0-r2) | ||
| Stream | docker-cli-buildx | Unknown (0.11.0-r0) | |
| skopeo | Not affected (1.13.0-r1) |