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CVE-2026-109408VulnerabilityPublished

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

Affects vault-java-driverSource GCVE Database

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Authoritative record:CVE-2026-109408· High 7.4

Not known to be exploited · CVSS 7.4 High · fixed in 7.0.0 : patch vault-java-driver soon.

Data as of 5 Nov 2026, 10:31 UTC

CVSS 3.1 base score
7.4High
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (Echo)CVSS 3.17.4
Patch
Available – fixed in 7.0.0
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 5 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

What to do

Affected software

ProductAffectedFixed in
Mavenio.github.jopenlibs/vault-java-driverpkg:maven/io.github.jopenlibs/vault-java-driverOther threatsAffected
  • >=5.2.0 <=6.2.3
Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade to vault-java-driver version 7.0.0 or later, where this issue is fixed. Until then, avoid using affected versions (5.2.0 through 6.2.3) in environments where network attackers could intercept traffic. There is no indication that other mitigations or workarounds are provided by the vendor.

Description

The vault-java-driver, a Java client for HashiCorp Vault, has a vulnerability where TLS certificate and hostname verification can be silently disabled in certain conditions despite the caller requesting verification. This occurs when an SslConfig is passed without calling build(), restored via Java deserialization, or when the VAULT_SSL_VERIFY environment variable is set to a truthy value other than "true". This causes the driver to install a trust-all SSLContext, allowing a network attacker to intercept and read Vault tokens and secrets and forge responses. The issue affects versions 5.2.0 through 6.2.3 and is fixed in version 7.0.0.

References

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