Auth bypass in Syslifters Sysreptor
CVE-2026-42291
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.
Vulnerability class: IDOR (Insecure Direct Object Reference)
EPSS: 0.002 (8.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N.
Affected products
- Syslifters Sysreptor — versions >= 2026.4, < 2026.27
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-42291?
- CVE-2026-42291 is a medium-severity vulnerability in Syslifters Sysreptor, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 6.8/10. Published 2026-05-08.
- How severe is CVE-2026-42291?
- Medium severity. CVSS v3 base score is 6.8 out of 10.