CVE-2026-23992 is a medium severity vulnerability with a CVSS score of 5.9. No known exploits currently, and patches are available.
Very low probability of exploitation
EPSS predicts the probability of exploitation in the next 30 days based on real-world threat data, complementing CVSS severity scores with actual risk assessment.
A compromised or misconfigured TUF repository can have the configured value of signature thresholds set to 0, which effectively disables signature verification.
Unathorized modification to TUF metadata files is possible at rest, or during transit as no integrity checks are made.
Upgrade to v2.3.1
Always make sure that the TUF metadata roles are configured with a threshold of at least 1.
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).
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