jopenlibs vault-java-driver up to 6.2.3 TLS Configuration SslConfig.isVerify certificate validation

Summaryinfo

A vulnerability marked as problematic has been reported in jopenlibs vault-java-driver up to 6.2.3. This impacts the function SslConfig.isVerify of the component TLS Configuration. This manipulation causes certificate validation. This vulnerability is tracked as CVE-2026-109408. The attack is possible to be carried out remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in jopenlibs vault-java-driver up to 6.2.3. Affected by this vulnerability is the function SslConfig.isVerify of the component TLS Configuration. The manipulation with an unknown input leads to a certificate validation vulnerability. The CWE definition for the vulnerability is CWE-295. The product does not validate, or incorrectly validates, a certificate. As an impact it is known to affect integrity. The summary by CVE is:

vault-java-driver, a Java client for HashiCorp Vault, silently disables TLS certificate and hostname verification in three states where the caller asked for verification: an SslConfig passed to VaultConfig without calling build(), an SslConfig restored by Java deserialization, and VAULT_SSL_VERIFY set to a truthy value other than "true", such as 1, yes or on. In each case SslConfig.isVerify() returns false and the driver installs a trust-all SSLContext. An attacker on the network path to the Vault server can then read the Vault token and secrets in transit and forge responses. This issue affects io.github.jopenlibs:vault-java-driver 5.2.0 through 6.2.3. It is fixed in 7.0.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-109408 since 10/12/2026. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1587.003 according to MITRE ATT&CK.

Upgrading to version 7.0.0 eliminates this vulnerability.

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Productinfo

Type

• Hardware Driver Software

Vendor

• jopenlibs

Name

• vault-java-driver

Version

• 6.2.0
• 6.2.1
• 6.2.2
• 6.2.3

Website

• Product: https://github.com/jopenlibs/vault-java-driver/

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