CVE-2026-63361

HIGH CVSS 4.0: 8.5 EPSS 0.30%
Updated Aug 27, 2026
Limesurvey
Parameter Value
CVSS 8.5 (HIGH)
Type CWE-79 (Cross-Site Scripting (XSS))
Vendor Limesurvey
Public PoC No

LimeSurvey Community Edition 7.0.5 contains an authenticated reflected cross-site scripting vulnerability in the HTML editor popup endpoint. The text and name query parameters are passed through a blacklist sanitizer and then rendered without context-appropriate output encoding.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
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:*:*:*:*:*