CVE-2026-33758

Published: Mar 27, 2026 Last Modified: Mar 27, 2026
ExploitDB:
Other exploit source:
Google Dorks:
CRITICAL 9,4
Source: [email protected]
Attack Vector: network
Attack Complexity: low
Privileges Required: none
User Interaction: passive
Confidentiality: N/A
Integrity: N/A
Availability: N/A

Description

AI Translation Available

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`.

EPSS (Exploit Prediction Scoring System)

Trend Analysis

EPSS (Exploit Prediction Scoring System)

Prevede la probabilità di sfruttamento basata su intelligence sulle minacce e sulle caratteristiche della vulnerabilità.

EPSS Score
0,0015
Percentile
0,3th
Updated

EPSS Score Trend (Last 2 Days)

20

Improper Input Validation

Stable
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Availability Confidentiality Integrity
Potential Impacts:
Dos: Crash, Exit, Or Restart Dos: Resource Consumption (Cpu) Dos: Resource Consumption (Memory) Read Memory Read Files Or Directories Modify Memory Execute Unauthorized Code Or Commands
Applicable Platforms
All platforms may be affected
Likelihood of Exploit: High
View CWE Details
79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Stable
Abstraction: Base Structure: Simple
Common Consequences
Security Scopes Affected:
Access Control Confidentiality Integrity Availability
Potential Impacts:
Bypass Protection Mechanism Read Application Data Execute Unauthorized Code Or Commands
Applicable Platforms
Technologies: AI/ML, Web Based, Web Server
Likelihood of Exploit: High
View CWE Details
116

Improper Encoding or Escaping of Output

Draft
Abstraction: Class Structure: Simple
Common Consequences
Security Scopes Affected:
Integrity Confidentiality Availability Access Control
Potential Impacts:
Modify Application Data Execute Unauthorized Code Or Commands Bypass Protection Mechanism
Applicable Platforms
Technologies: AI/ML, Database Server, Not Technology-Specific, Web Server
Likelihood of Exploit: High
View CWE Details
https://github.com/openbao/openbao/commit/6e2b2dd84f0e47ceb…
https://github.com/openbao/openbao/commit/6e2b2dd84f0e47cebc90d6e79609dd5274732…
https://github.com/openbao/openbao/pull/2709
https://github.com/openbao/openbao/pull/2709
https://github.com/openbao/openbao/releases/tag/v2.5.2
https://github.com/openbao/openbao/releases/tag/v2.5.2
https://github.com/openbao/openbao/security/advisories/GHSA…
https://github.com/openbao/openbao/security/advisories/GHSA-cpj3-3r2f-xj59