Deeply nested JSON in vault-java-driver crashes threads that read it
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-674.
Summary
The jopenlibs vault-java-driver Java client for HashiCorp Vault is affected from 5.2.0 before 7.0.0. Its vendored JSON parser has no nesting depth limit (CWE-674), so a deeply nested value causes a StackOverflowError that escapes catch handlers and kills the reading thread. A token that can write but not read a KV v2 path can store such a value, and later reads of that path fail on Vault 1.19.x or earlier.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
Description from the CNA
vault-java-driver, a Java client for HashiCorp Vault, parses Vault's JSON responses with a vendored minimal-json parser that has no nesting depth limit. A deeply nested value raises a StackOverflowError, which escapes catch (Exception) handlers and kills the reading thread. A Vault token that can write but not read a KV v2 path can store such a value there, so every later read of that path through the driver fails. This requires Vault 1.19.x or earlier, because 1.20 and later reject values nested deeper than 298 levels. This issue affects io.github.jopenlibs:vault-java-driver 5.2.0 through 6.2.3 and is fixed in 7.0.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade io.github.jopenlibs:vault-java-driver to version 7.0.0, which fixes the issue.
Written with Claude Haiku 5.5 from the sources below · 2026-11-06
- Fix · CNA vault-java-driver (jopenlibs) Fixed in 7.0.0
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
jopenlibs vault-java-driver 7.0.0
2 records Highest priority Priority LOW 2 LOW
Other records, highest priority first
- TI-2026-85379 vault-java-driver silently disables requested TLS verificationPriority LOW 34
Vendor assessments
Timeline
- 2026-11-05 Threatist record created from CVE-2026-112072
- 2026-11-05 Alias added: GHSA-g3p9-q9ch-26gc
- 2026-11-05 CISA SSVC decision points changed
- 2026-11-05 Priority changed: MEDIUM → LOW
- 2026-11-06 Affected versions changed · Red Hat
- 2026-11-06 CVSS score added · Red Hat
References
More jopenlibs vulnerabilities
- TI-2026-85379 vault-java-driver silently disables requested TLS verification CVSS 3.1HIGH 7.4
Sources
- CVE-2026-112072 · CVE Program
- CVE-2026-112072 · NVD
- FIRST EPSS
- GHSA-g3p9-q9ch-26gc · GitHub Advisory Database · CC BY 4.0
- CVE-2026-112072 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences