CVE-2026-23992
go-tuf improperly validates the configured threshold for delegations
Impact
# Security Disclosure: Improper validation of configured threshold for delegations ## Summary A compromised or misconfigured TUF repository can have the configured value of signature thresholds set to 0, which effectively disables signature verification. ## Impact Unathorized modification to TUF metadata files is possible at rest, or during transit as no integrity checks are made. ## Patches Upgrade to v2.3.1 ## Workarounds Always make sure that the TUF metadata roles are configured with a threshold of at least 1. ## Affected code: The `metadata.VerifyDelegate` did not verify the configured threshold prior to comparison. This means that a misconfigured TUF repository could disable the signature verification by setting the threshold to 0, or a negative value (and so always make the signature threshold computation to pass).
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/theupdateframework/go-tuf/v2 | < 2.3.1 | 2.3.1 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Theupdateframework | Go-Tuf | from 2.0.0 before 2.3.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/theupdateframework/go-tuf/commit/b38d91fdbc69dfe31fe9230d97dafe527ea854a0
- https://github.com/theupdateframework/go-tuf/security/advisories/GHSA-fphv-w9fq-2525
- https://github.com/advisories/GHSA-fphv-w9fq-2525
- https://github.com/theupdateframework/go-tuf/releases/tag/v2.3.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-23992