Is CVE-2026-33758 actively exploited?

No active exploitation of CVE-2026-33758 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2026-33758 be exploited remotely?

Yes. CVE-2026-33758 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2026-33758?

CVE-2026-33758 has a CVSS score of 6.1 (MEDIUM).

HOME VULNERABILITIESCVE-2026-33758

MEDIUM

CVE-2026-33758

CWE-20Published: March 27, 2026· Updated: Mar 30, 2026

6.1

CVSS v3.1

EPSS:0.08%probability of exploitation in 30 daysPercentile:24.3th

Official Description

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao installations that have an OIDC/JWT authentication method enabled and a role with `callback_mode=direct` configured are vulnerable to XSS via the `error_description` parameter on the page for a failed authentication. This allows an attacker access to the token used in the Web UI by a victim. The `error_description` parameter has been replaced with a static error message in v2.5.2. The vulnerability can be mitigated by removing any roles with `callback_mode` set to `direct`.

NVD Source

Technical Analysis

CVE-2026-33758 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.