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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
Passive
Minimal interaction
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 4
https://github.com/opencats/OpenCATS/commit/f82e0ee3045845b90b7e111c46f30998496…
disclosure@vulncheck.com
https://github.com/opencats/OpenCATS/commits/master/lib/MRU.php
disclosure@vulncheck.com
https://github.com/opencats/OpenCATS/releases/tag/v0.12.0
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/opencats-before-stored-xss-via-mru-navigat…
disclosure@vulncheck.com