# CVE-2026-109408: vault-java-driver: SslConfig silently disables requested TLS verification

Status: published. Published: 2026-11-05. Updated: 2026-11-05.

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.

## Remediation

- fix: Upgrade io.github.jopenlibs:vault-java-driver to 7.0.0 or later. (source: CNA: Echo)
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: Echo) — https://github.com/jopenlibs/vault-java-driver/pull/78
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: Echo) — https://repo.maven.apache.org/maven2/io/github/jopenlibs/vault-java-driver/7.0.0/

## Affected products and versions

- jopenlibs / vault-java-driver (io.github.jopenlibs:vault-java-driver): ≥ 5.2.0; < 7.0.0 (affected, maven). Source: CNA: Echo

## Severity and prioritization

- CVSS 3.1: 7.4 (high); CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N; source: CNA: Echo

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-636, CWE-295, CWE-297

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/jopenlibs/vault-java-driver/pull/78 (CNA: Echo; patch)

- https://repo.maven.apache.org/maven2/io/github/jopenlibs/vault-java-driver/7.0.0/ (CNA: Echo; patch)

## Provenance

- CNA: Echo: https://www.cve.org/CVERecord?id=CVE-2026-109408; retrieved 2026-11-05; source updated 2026-11-05

Revision: 809bb8d6e09aa186b72a2a3de3de7e1176d3acf5235c41c551b049adbc777f32

Canonical: https://y2.dev/cve/CVE-2026-109408

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