CVE WatchNov 5, 2026

CVE-2026-109408

vault-java-driver, a Java client for HashiCorp Vault, silently disables TLS certificate and hostname verification in three states where the

CVSS

7.4

High

EPSS

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KEV

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Exploit Today

0-100

Published: Nov 5, 2026 · Last modified: Nov 5, 2026 · CWE-295 · CWE-297 · CWE-636

EPSS · 30d

Not enough EPSS history yet.

Technical description

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.

Official references

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