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Connect CMS: Improper Authorization in the My Page Profile Update Feature Allows Modification of Arbitrary User Information

High severity GitHub Reviewed Published Mar 23, 2026 in opensource-workshop/connect-cms • Updated Mar 23, 2026

Package

composer opensource-workshop/connect-cms (Composer)

Affected versions

<= 1.41.0
>= 2.0.0, <= 2.41.0

Patched versions

1.41.1
2.41.1

Description

Security Advisory — My Page Profile Update (Improper Authorization)

Summary

An improper authorization issue in the My Page profile update feature may allow modification of arbitrary user information.

Affected Versions

  • 1.x series: <= 1.41.0
  • 2.x series: <= 2.41.0

Patched Versions

  • 1.41.1
  • 2.41.1

Description

In part of the My Page profile update feature, another user's profile information or password could be modified. If exploited, arbitrary user accounts may be taken over. Exploitation requires that the attacker be able to reach the affected functionality as an authenticated user. Users affected by this vulnerability should update to a fixed version.

Solution

Update to the fixed version.
For the 1.x series, update to 1.41.1 or later.
For the 2.x series, update to 2.41.1 or later.

Credits

OpenSource WorkShops thanks Sho Odagiri (小田切 祥) of GMO Cybersecurity by Ierae, Inc. for reporting this vulnerability.

References

@gakigaki gakigaki published to opensource-workshop/connect-cms Mar 23, 2026
Published to the GitHub Advisory Database Mar 23, 2026
Reviewed Mar 23, 2026
Last updated Mar 23, 2026

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

EPSS score

Exploit Prediction Scoring System (EPSS)

This score estimates the probability of this vulnerability being exploited within the next 30 days. Data provided by FIRST.
(8th percentile)

Weaknesses

Improper Authorization

The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.

Authorization Bypass Through User-Controlled Key

The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Learn more on MITRE.

CVE ID

CVE-2026-32300

GHSA ID

GHSA-qr6x-wvxr-8hm9

Source code

Credits

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