CVE-2026-63360

HIGH CVSS 4.0: 7.4 EPSS 0.27%
Updated Aug 27, 2026
Limesurvey
Parameter Value
CVSS 7.4 (HIGH)
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Limesurvey
Public PoC No

LimeSurvey Community Edition 7.0.5+260623 contains an authenticated reflected Cross-Site Scripting vulnerability in the user activation confirmation endpoint. The action query parameter is copied into the response and inserted into a hidden input attribute without HTML attribute encoding. This issue affects LimeSurvey: 7.0.5.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
Active
User action required

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption

CVSS Vector v4.0

Vulnerable Products 3

Configuration From (including) Up to (excluding)
Limesurvey Limesurvey
cpe:2.3:a:limesurvey:limesurvey:7.0.5:*:windows:*:*:*:*:*
Limesurvey Limesurvey
cpe:2.3:a:limesurvey:limesurvey:7.0.5:*:macos:*:*:*:*:*
Limesurvey Limesurvey
cpe:2.3:a:limesurvey:limesurvey:7.0.5:*:linux:*:*:*:*:*