Missing Authorization Flaw in OpenCATS Affects User-Managed Lists
CVE-2026-112785

5.3MEDIUM

Key Information:

Vendor

Opencats

Status
Opencats
Vendor
CVE Published:
20 October 2026

What is CVE-2026-112785?

OpenCATS versions prior to 0.10.0 expose a missing authorization vulnerability that permits authenticated users with READ-level access to interfere with saved lists via AJAX endpoints. This weakness allows attackers to utilize the newList.php, editListName.php, deleteList.php, and addToLists.php scripts to create, rename, delete, or populate saved lists by leveraging any savedListID, thereby compromising the integrity and management of lists across the application. Users of OpenCATS should urgently upgrade to version 0.10.0 or later to mitigate these risks.

Affected Version(s)

OpenCATS 0 < 0.10.0

References

https://github.com/opencats/OpenCATS/issues/720
issue-tracking
https://github.com/opencats/OpenCATS/commit/aa3b414c3672f...
patch
https://github.com/opencats/OpenCATS/releases/tag/v0.10.0
release-notes

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

lighthousekeeper1212
leediay153 from Viettel Post
.