CVE-2026-91775

LimeSurvey Community Edition 7.0.14 - Reflected XSS through unescaped LSS survey-import warnings

7.4 High

LimeSurvey Community Edition 7.0.14 fails to safely encode attacker-controlled content from a crafted .lss survey file when displaying import warnings, resulting in XSS in the administrative interface.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: Active

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.52%Up 0.1 points since Sep 24, 2026

What each source reports

CVE List Score used 7.4

LimeSurvey Community Edition 7.0.14 - Reflected XSS through unescaped LSS survey-import warnings

Record: CVE-2026-91775
CVSS 4.0: 7.4 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2026-85427 7.4

Record: EUVD-2026-85427
CVSS 4.0: 7.4 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-cjg2-mvj3-g74m 7.4

LimeSurvey fails to safely encode attacker-controlled content from a crafted .lss survey file...

LimeSurvey fails to safely encode attacker-controlled content from a crafted .lss survey file when displaying import warnings, resulting in XSS in the administrative interface.

Record: GHSA-cjg2-mvj3-g74m
CVSS 4.0: 7.4 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-79
Updated: 2026-11-02

NVD 7.4

Record: CVE-2026-91775
CVSS 4.0: 7.4 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness: CWE-79
Updated: 2026-11-02

OSV 7.4

LimeSurvey Community Edition 7.0.14 - Reflected XSS through unescaped LSS survey-import warnings

Record: CVE-2026-91775
CVSS 4.0: 7.4 HighCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

limesurvey

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-91775 is a high vulnerability (CVSS 7.4) in Limesurvey, published September 23, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.52%, the 44th percentile. No source names a fixed version.