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Vulnerabilities

Vulnerability · CVE-2026-109425

Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets

Published Oct 12, 2026 · catalog updated Oct 14, 2026 · Tink-go 2.8.0 Keyset Validation

Check if you run it

No confirmed exploitation is on record for CVE-2026-109425. EPSS is 0.19%. Act only if a listed version of Tink-go 2.8.0 Keyset Validation is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Tink-go 2.8.0 Keyset Validation).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium6.9
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.19%
Remediation
Advisory link
Affected products
vendor tink-crypto tink-go

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor tink-crypto tink-goversion unspecified

How to fix CVE-2026-109425

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-109425. EPSS is 0.19%. Act only if a listed version of Tink-go 2.8.0 Keyset Validation is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-1286. EPSS 0.19%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 12, 2026 · CIRCL Vulnerability Lookup

    Detected

    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 k

  2. Oct 14, 2026 · CIRCL Vulnerability Lookup

    Updated

    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 k

Sources

  • CIRCL Vulnerability LookupVulnerability recordCVE-2026-109425

    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 violat

    vulnerability.circl.lu
  • CVE.orgVulnerability recordCVE-2026-109425

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-109425

    30-day exploitation probability 0.2%

    first.org

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.