CVE-2026-42291
Received Received - Intake
Authorization Bypass in SysReptor Personal Notes

Publication date: 2026-05-08

Last updated on: 2026-05-08

Assigner: GitHub, Inc.

Description
SysReptor is a fully customizable pentest reporting platform. From version 2026.4 to before version 2026.27, the endpoints for reading and creating sharing links for personal notes is not properly authorized. This allows authenticated attackers who obtain the note ID of victim users to list and create sharing links to those users' personal notes. This gives attackers read and write access to notes of other users. This exploit works in both SysReptor Professional and Community. In Community it has, however, no impact because all users have superuser permissions and can list personal notes of other users at /admin/pentests/usernotebookpage/. This issue has been patched in version 2026.27.
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Meta Information
Published
2026-05-08
Last Modified
2026-05-08
Generated
2026-06-19
AI Q&A
2026-05-09
EPSS Evaluated
2026-06-18
NVD
CVE-2026-42291
Affected Vendors & Products
Showing 2 associated CPEs
Vendor Product Version / Range
sysreptor sysreptor to 2026.27 (exc)
sysreptor sysreptor 2026.27
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-639 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.
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Executive Summary

The vulnerability exists in SysReptor versions from 2026.4 up to but not including 2026.27. It involves improper authorization on endpoints used to read and create sharing links for personal notes. Authenticated attackers who know the note ID of other users can list and create sharing links to those users' personal notes, effectively gaining read and write access to notes that do not belong to them.

This issue affects both SysReptor Professional and Community editions. However, in the Community edition, the impact is limited because all users already have superuser permissions and can access other users' personal notes through a specific admin page.

The vulnerability was fixed in version 2026.27.

Impact Analysis

This vulnerability allows an authenticated attacker to gain unauthorized read and write access to other users' personal notes by exploiting improper authorization on sharing link endpoints.

  • Attackers can view sensitive or confidential information stored in personal notes.
  • Attackers can modify or create sharing links, potentially spreading access to unauthorized parties.
  • In environments using SysReptor Professional, this could lead to significant data exposure and integrity issues.
  • In the Community edition, the impact is minimal since users already have broad access.
Mitigation Strategies

The vulnerability has been patched in SysReptor version 2026.27. The immediate step to mitigate this vulnerability is to upgrade your SysReptor installation to version 2026.27 or later.

Until the upgrade is applied, restrict access to the affected endpoints for reading and creating sharing links for personal notes to trusted users only, and monitor for any unauthorized access attempts.

Compliance Impact

This vulnerability allows authenticated attackers to gain read and write access to personal notes of other users by exploiting improper authorization in SysReptor versions 2026.4 to before 2026.27.

Such unauthorized access to personal data could potentially lead to violations of data protection regulations and standards like GDPR and HIPAA, which require strict controls on access to personal and sensitive information.

However, the provided information does not explicitly state the impact on compliance with these standards.

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