Vulnerability · Published Nov 5, 2026 · Assigned by Echo
CVE-2026-112072vault-java-driver: stored deeply nested JSON kills every thread that reads it
Medium 6.5
In plain English
A medium-severity security flaw in vault-java-driver from jopenlibs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 26% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| jopenlibs | vault-java-driver | 5.2.0 – before 7.0.0 |
Weakness: CWE-674 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H