CVE-2026-109425: Improper Validation of Syntactic Correctness of Input in tink-crypto tink-go
Description
Tink-go (tink-crypto/tink-go) through 2.8.0 contains an input-validation vulnerability where keyset.NewHandleWithNoSecrets() and ReadWithNoSecrets() skip the structural Validate() step before constructing a keyset.Handle, allowing malformed public or no-secret keysets that violate Tink's keyset invariants to be accepted. 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.
CVSS v4.0
Score 6.9medium
Affected software
tink-crypto
tink-go
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Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-12T15:52:36.681Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6acd3d342cdf04f656cccd64
Added to database: 10/12/2026, 20:04:04 UTC
Last updated: 10/12/2026, 20:04:04 UTC
Views: 1
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