CVE-2026-115513

Description

OpenCATS before 0.12.0 contains a stored cross-site scripting vulnerability that allows a low-privileged authenticated user to inject HTML/JavaScript payloads by setting a Candidate, Company, Contact, Job Order, or List name/title field, which is stored unsanitized and later rendered unescaped in the 'Recent' (MRU) navigation panel displayed on nearly every page via lib/MRU.php's getFormatted() function. Attackers can exploit this by crafting a malicious record name that executes arbitrary JavaScript in the session of any other user, including Site Administrators, who views the record, enabling session/cookie theft and privilege escalation to full administrative control.

References

https://www.vulncheck.com/advisories/opencats-before-stored-xss-via-mru-navigation-panel

https://github.com/opencats/OpenCATS/releases/tag/v0.12.0

https://github.com/opencats/OpenCATS/commits/master/lib/MRU.php

https://github.com/opencats/OpenCATS/commit/f82e0ee3045845b90b7e111c46f30998496e38a8

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-108259

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4

EPSS