Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-109425
tink-crypto tink-go — Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets
AV AC AT PR UI VC VI VA CVSS EPSS %ile KEV
N L N N N N L N 6.9 .0019 8.3 —
AFFECTED
Product Versions Fixed
tink-go 2.0.0 – —
TIMELINE
Oct 12 Reserved by VulnCheck
Oct 12 Published (CNA: VulnCheck)
Oct 13 EXPLOIT PUBLISHED — CVE-2026-109425 (tink-crypto tink-go). Public exploit reference added.
Oct 14 EXPLOIT PUBLISHED — CVE-2026-109425 (tink-crypto tink-go). Public exploit reference added.
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.
Lifecycle
Complete event history — 4 events, chronological
| Date | Event | Detail |
|---|
| October 12, 2026 | Reserved | Reserved by VulnCheck |
| October 12, 2026 | Published | Published (CNA: VulnCheck) |
| October 13, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-109425 (tink-crypto tink-go). Public exploit reference added. |
| October 14, 2026 | EXPLOIT PUBLISHED | EXPLOIT PUBLISHED — CVE-2026-109425 (tink-crypto tink-go). Public exploit reference added. |
Affected
Affected products and packages — 1 row
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| tink-crypto | tink-go | — | 2.0.0 | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-109425 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
