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Global data_breach Multiple sectors HIGH 36m Global vulnerability Government and Critical Infrastructure CRITICAL 43m Global vulnerability Multiple sectors CRITICAL 59m Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global vulnerability Information Technology / Software Infrastructure CRITICAL 1h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 2h Global data_breach Multiple sectors HIGH 36m Global vulnerability Government and Critical Infrastructure CRITICAL 43m Global vulnerability Multiple sectors CRITICAL 59m Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global vulnerability Information Technology / Software Infrastructure CRITICAL 1h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 2h Global data_breach Multiple sectors HIGH 36m Global vulnerability Government and Critical Infrastructure CRITICAL 43m Global vulnerability Multiple sectors CRITICAL 59m Global apt Financial Services, Government HIGH 1h Global insider Cross-sector CRITICAL 1h Global vulnerability Multiple sectors CRITICAL 1h Global vulnerability Information Technology / Software Infrastructure CRITICAL 1h Global data_breach Healthcare CRITICAL 2h Global malware Financial Services HIGH 2h Global vulnerability Technology/Software Development HIGH 2h
Vulnerabilities

CVE-2026-33757

Critical
OpenBao JWT/OIDC Authentication Bypass via Direct Callback Mode
CWE-384 — Weakness Type
Published: Mar 27, 2026  ·  Modified: Apr 2, 2026  ·  Source: NVD
CVSS v3
9.6
🔗 NVD Official
📄 Description (English)

OpenBao is an open source identity-based secrets management system. Prior to version 2.5.2, OpenBao does not prompt for user confirmation when logging in via JWT/OIDC and a role with `callback_mode` set to `direct`. This allows an attacker to start an authentication request and perform "remote phishing" by having the victim visit the URL and automatically log-in to the session of the attacker. Despite being based on the authorization code flow, the `direct` mode calls back directly to the API and allows an attacker to poll for an OpenBao token until it is issued. Version 2.5.2 includes an additional confirmation screen for `direct` type logins that requires manual user interaction in order to finish the authentication. This issue can be worked around either by removing any roles with `callback_mode=direct` or enforcing confirmation for every session on the token issuer side for the Client ID used by OpenBao.

🤖 AI Executive Summary

OpenBao versions prior to 2.5.2 lack user confirmation prompts during JWT/OIDC login with direct callback mode, enabling attackers to perform remote phishing attacks and hijack user sessions. The vulnerability allows attackers to automatically log victims into attacker-controlled sessions through malicious URLs without user interaction.

📄 Description (Arabic)

يفتقر OpenBao قبل الإصدار 2.5.2 إلى شاشة تأكيد المستخدم عند تسجيل الدخول عبر JWT/OIDC مع وضع الاستدعاء المباشر. يمكن للمهاجمين استغلال هذه الثغرة لإجراء هجمات تصيد احتيالي عن بعد وإجبار الضحايا على تسجيل الدخول إلى جلسات المهاجم تلقائياً. يتطلب الإصلاح ترقية فورية أو تعطيل الأدوار المتأثرة.

🤖 ملخص تنفيذي (AI)

OpenBao versions prior to 2.5.2 lack user confirmation prompts during JWT/OIDC login with direct callback mode, enabling attackers to perform remote phishing attacks and hijack user sessions. The vulnerability allows attackers to automatically log victims into attacker-controlled sessions through malicious URLs without user interaction.

🤖 AI Intelligence Analysis Analyzed: Apr 12, 2026 12:32
🇸🇦 Saudi Arabia Impact Assessment
Saudi Relevance: high
🏢 Affected Saudi Sectors
banking telecom government healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
10.0
/ 10.0
🔧 Remediation Steps (English)
Upgrade OpenBao to version 2.5.2 or later immediately. If immediate upgrade is not possible, disable all roles with callback_mode=direct or enforce additional confirmation requirements at the token issuer level. Implement network-based controls to restrict access to OpenBao authentication endpoints.
🔧 خطوات المعالجة (العربية)
قم بترقية OpenBao إلى الإصدار 2.5.2 أو أحدث فوراً. إذا لم يكن الترقية الفورية ممكنة، قم بتعطيل جميع الأدوار التي تحتوي على callback_mode=direct أو فرض متطلبات تأكيد إضافية على مستوى مُصدر الرمز. طبق عناصر تحكم قائمة على الشبكة لتقييد الوصول إلى نقاط نهاية المصادقة في OpenBao.
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
5.1.1 5.1.2 5.2.1 5.2.2
🔵 SAMA CSF
AC-2 AC-3 AC-7 IA-2 IA-5
🟡 ISO 27001:2022
A.9.2.1 A.9.2.2 A.9.2.4 A.9.4.3
📦 Affected Products / CPE 1 entries
openbao:openbao
📊 CVSS Score
9.6
/ 10.0 — Critical
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionR — Required
ScopeC — Changed
ConfidentialityH — High
IntegrityH — High
AvailabilityL — Low / Local
📋 Quick Facts
Severity Critical
CVSS Score9.6
CWECWE-384
EPSS0.07%
Exploit No
Patch ✓ Yes
Published 2026-03-27
Source Feed nvd
🇸🇦 Saudi Risk Score
10.0
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
patch-available CWE-384
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