CVE-2026-109425

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-109425
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109425.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-109425
Downstream
Published
2026-10-12T19:55:37Z
Modified
2026-10-15T02:31:05Z
Severity
  • 6.9 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Tink-go 2.8.0 Keyset Validation Bypass via NewHandleWithNoSecrets
Details

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.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-1286"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/109xxx/CVE-2026-109425.json"
}
References

Affected packages

Git / github.com/tink-crypto/tink-go

Affected ranges

Type
GIT
Repo
https://github.com/tink-crypto/tink-go
Events
Introduced
e4efe8dadfb70cc4bad49c2f5a774e6783e0a251
Fixed
ea8714348155f8b04002b633a790f41d58539672
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "2.0.0"
        },
        {
            "last_affected":  "2.8.0"
        },
        {
            "introduced":  "0"
        },
        {
            "fixed":  "2.8.0"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

v2.*
v2.0.0
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.6.0
v2.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-109425.json"