CVE-2026-109425: tink-go 2.0.0 through 2.8.0

Affected technology

tink-go · 2.0.0 through 2.8.0
tink-crypto

Description’s affected range: through 2.8.0

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Attackers can supply a malformed keyset, such as one with an enabled public key lacking a valid primary key or a DESTROYED key with no KeyData, causing inconsistent downstream validation where functions like jwt.JWKSetFromPublicKeysetHandle() process the invalid handle and produce a JWK set, potentially misleading applications that rely on successful handle construction as proof of keyset integrity. Vendor/CNA’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality and availability impact as none; integrity impact as low.