Auth bypass in Opencats
CVE-2026-112785
OpenCATS before 0.10.0 contains a missing authorization vulnerability that allows READ-level users to create, rename, delete, and populate saved lists via AJAX endpoints. Authenticated attackers can send requests to newList.php, editListName.php, deleteList.php, or addToLists.php with any savedListID to alter or delete any saved list site-wide.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/opencats/OpenCATS/issues/720 (issue-tracking)
- github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bd (patch)
- OpenCATS v0.10.0 Release Notes (release-notes)
- github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/modu… (technical-description)
- github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/modu… (technical-description)
- github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/modu… (technical-description)
- github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/modu… (technical-description)
- VulnCheck Advisory: OpenCATS before 0.10.0 Missing Authorization in Saved-List AJAX Endpoints (third-party-advisory)
Frequently asked questions
- What is CVE-2026-112785?
- CVE-2026-112785 is a medium-severity vulnerability in Opencats, classified under Missing Authorization. CVSS score: 4.3/10. Published 2026-10-20.
- How severe is CVE-2026-112785?
- Medium severity. CVSS v3 base score is 4.3 out of 10.