How broadly exploitable is this vulnerability?

Exploitation is limited to authenticated users who already have access to a collection and a role setup where manage=false is intended to restrict management capabilities. It does not give arbitrary internet users direct access, but it can allow internal privilege overreach between existing collaborators.

Does exploitation require elevated privileges or admin rights?

Full administrative rights are not required. A user with access to a collection and a role or position that normally conveys management capabilities—but where manage=false is used to restrict them—may still be able to perform certain management actions.

What is the safest general fix pattern?

Centralize authorization decisions and enforce explicit, fine-grained permission checks for all collection management operations, ensuring that every such action verifies both collection access and the manage flag. Adopt a deny-by-default stance so that new operations are blocked unless explicitly allowed.

Severity:

HIGH RISK

(8.3)

Authorization Bypass via Improper Access Control (CWE-285) in Vaultwarden Collection Management

CVE-2026-27803

Published:

Mar 4, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

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CWE-78

CRITICAL RISK

CRITICAL

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Remote Code Execution

March 7, 2026

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CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Remote Code Execution via SQL Injection on the Database Server

March 7, 2026

Vulnerability Type

Category:

Authorization / Access Control

CWE:

CWE-269;CWE-285;CWE-863

Impact:

Privilege Escalation / Unauthorized Operations on Collections

Severity:

HIGH RISK

(8.3)

CVSS Version:

3.1

Vulnerability Type

Category:

Authorization / Access Control

CWE:

CWE-269;CWE-285;CWE-863

Impact:

Privilege Escalation / Unauthorized Operations on Collections

Severity:

HIGH RISK

(8.3)

CVSS Version:

3.1

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355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Authorization Bypass via Improper Access Control (CWE-285) in Vaultwarden Collection Management

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

CRITICAL RISK

CRITICAL

(9.9)

Command Injection in MCP Stdio Configuration Validation (CWE-78) in WeKnora

CRITICAL RISK

CRITICAL

(9.9)

SQL Injection via PostgreSQL Array/Row Expressions (CWE-89) in WeKnora Query Engine

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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