CVE-2026-112783

MEDIUM 4.3

OpenCATS before 0.10.0 Missing Authorization via Activity AJAX Endpoints

CVSS Score

4.3

EPSS Score

0.0%

EPSS Percentile

0th

OpenCATS before 0.10.0 contains a missing authorization vulnerability in ajax/deleteActivity.php and ajax/editActivity.php that allows READ-level users to edit and delete activity entries. Authenticated attackers can supply an arbitrary activityID via GET or POST to modify or delete activity and pipeline history for candidates, contacts and companies.

CWE	CWE-862
Vendor	opencats
Product	opencats
Published	Oct 20, 2026

Stay Ahead of the Next One

Get instant alerts for opencats opencats

Be the first to know when new medium vulnerabilities affecting opencats opencats are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Affected Versions

opencats / OpenCATS

0 < 0.10.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/opencats/OpenCATS/issues/720 github.com: https://github.com/opencats/OpenCATS/commit/aa3b414c3672f5010ca26c44192aa8e72d3735bd github.com: https://github.com/opencats/OpenCATS/releases/tag/v0.10.0 github.com: https://github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/deleteActivity.php github.com: https://github.com/opencats/OpenCATS/blob/5781f41814f09493c7ce05b9251b5e09c1aff0cd/ajax/editActivity.php vulncheck.com: https://www.vulncheck.com/advisories/opencats-before-0.10.0-missing-authorization-via-activity-ajax-endpoints

Credits

lighthousekeeper1212 🔍 leediay153 from Viettel Post