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OpenBao Vulnerabilities Allow Security Bypass and XSS Attacks

Favicon for wid.cert-bund.de CERT-Bund Security Advisories
Published March 25th, 2026
Detected March 26th, 2026
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Summary

CERT-Bund has issued a security advisory for OpenBao, detailing critical vulnerabilities (CVSS Base Score 9.6) that allow remote attackers to bypass security measures or perform XSS attacks. The advisory affects Open Source OpenBao versions prior to 2.5.2 running on Linux and UNIX.

What changed

This advisory from CERT-Bund details critical vulnerabilities in OpenBao, an open-source secrets management solution. The vulnerabilities, rated with a CVSS Base Score of 9.6, allow remote, anonymous attackers to bypass security controls or execute cross-site scripting (XSS) attacks. The advisory specifically impacts Open Source OpenBao versions prior to 2.5.2 and affects systems running on Linux and UNIX operating systems.

Organizations utilizing OpenBao should immediately review their installed versions and apply available mitigations. The advisory indicates that versions prior to 2.5.2 are affected, implying that an upgrade to version 2.5.2 or later is necessary to remediate these risks. Failure to address these vulnerabilities could lead to unauthorized access to sensitive data, compromise of system integrity, and potential data breaches.

What to do next

  1. Review OpenBao version for applicability (prior to 2.5.2).
  2. Apply available mitigations or upgrade to OpenBao version 2.5.2 or later.
  3. Assess potential impact of security bypass and XSS vulnerabilities on sensitive data.

Source document (simplified)

[WID-SEC-2026-0864] OpenBao: Mehrere Schwachstellen CVSS Base Score 9.6 (kritisch) CVSS Temporal Score 8.3 (hoch) Remoteangriff ja Datum 25.03.2026 Stand 26.03.2026 Mitigation ja

Betroffene Systeme

Betriebssystem

  • Linux
  • UNIX

Produktbeschreibung

OpenBao ist eine Open-Source-Lösung für Secrets Management, die sensible Daten wie Passwörter, API-Schlüssel und Zertifikate sicher speichert und verwaltet.

Produkte

25.03.2026
- Open Source OpenBao <2.5.2

Angriff

Angriff

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in OpenBao ausnutzen, um Sicherheitsvorkehrungen zu umgehen oder einen Cross Site Scripting Angriff durchzuführen. CVE Informationen Versionshistorie Feedback zum Advisory geben

Source

Analysis generated by AI. Source diff and links are from the original.

Classification

Agency
CERT-Bund
Published
March 25th, 2026
Instrument
Notice
Legal weight
Non-binding
Stage
Final
Change scope
Substantive
Document ID
WID-SEC-2026-0864

Who this affects

Applies to
Technology companies
Industry sector
5112 Software & Technology
Activity scope
Secrets Management Vulnerability Management
Geographic scope
Germany DE

Taxonomy

Primary area
Cybersecurity
Operational domain
IT Security
Compliance frameworks
NIST CSF
Topics
Data Security Vulnerability Management

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