CVE-2025-59043

OpenBao is an open source identity-based secrets management system. In OpenBao versions prior to 2.4.1, JSON objects after decoding may use significantly more memory than their serialized version. It is possible to craft a JSON payload to maximize the factor between serialized memory usage and deserialized memory usage, similar to a zip bomb, with factors reaching approximately 35. This can be used to circumvent the max_request_size configuration parameter which is intended to protect against denial of service attacks. The request body is parsed into a map very early in the request handling chain before authentication, which means an unauthenticated attacker can send a specifically crafted JSON object and cause an out-of-memory crash. Additionally, for requests with large numbers of strings, the audit subsystem can consume large quantities of CPU. The vulnerability is fixed in version 2.4.1.
Configurations

Configuration 1 (hide)

cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*

History

24 Oct 2025, 17:13

Type Values Removed Values Added
References () https://github.com/openbao/openbao/blob/788536bd3e10818a7b4fb00aac6affc23388e5a9/http/logical.go#L50 - () https://github.com/openbao/openbao/blob/788536bd3e10818a7b4fb00aac6affc23388e5a9/http/logical.go#L50 - Product
References () https://github.com/openbao/openbao/commit/d418f238bc99adc72c73109faf574cc2b672880c - () https://github.com/openbao/openbao/commit/d418f238bc99adc72c73109faf574cc2b672880c - Patch
References () https://github.com/openbao/openbao/pull/1756 - () https://github.com/openbao/openbao/pull/1756 - Issue Tracking
References () https://github.com/openbao/openbao/security/advisories/GHSA-g46h-2rq9-gw5m - () https://github.com/openbao/openbao/security/advisories/GHSA-g46h-2rq9-gw5m - Vendor Advisory
First Time Openbao openbao
Openbao
CPE cpe:2.3:a:openbao:openbao:*:*:*:*:*:*:*:*

17 Oct 2025, 16:15

Type Values Removed Values Added
New CVE

Information

Published : 2025-10-17 16:15

Updated : 2025-10-24 17:13


NVD link : CVE-2025-59043

Mitre link : CVE-2025-59043

CVE.ORG link : CVE-2025-59043


JSON object : View

Products Affected

openbao

  • openbao
CWE
CWE-400

Uncontrolled Resource Consumption