CVE-2026-18403

LimeSurvey Community Edition 7.0.5 - Authenticated SQL injection in CPDB

6.0 Medium

LimeSurvey Community Edition 7.0.5 contains an authenticated SQL injection vulnerability in the Central Participant Database (CPDB) workflow that copies survey participant tokens to the central participant list.

Attack profile

How easy it is to exploit

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

What an attacker can affect

Confidentiality: High
Integrity: Low
Availability: None

Exploit likelihood

0.38%Up 0.1 points since Aug 15, 2026

What each source reports

CVE List Score used 6.0

LimeSurvey Community Edition 7.0.5 - Authenticated SQL injection in CPDB

Record: CVE-2026-18403
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-89
Updated: 2026-11-02

EUVDEUVD-2026-58786 6.0

Record: EUVD-2026-58786
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-fxx2-xm5f-gmf5 6.0

LimeSurvey Community Edition 7.0.5 contains an authenticated SQL injection vulnerability in the...

Record: GHSA-fxx2-xm5f-gmf5
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/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-89
Updated: 2026-11-02

NVD 6.0

Record: CVE-2026-18403
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/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-89
Updated: 2026-11-02

OSV 6.0

LimeSurvey Community Edition 7.0.5 - Authenticated SQL injection in CPDB

Record: CVE-2026-18403
CVSS 4.0: 6.0 MediumCVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-89
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-2026-18403 is a medium vulnerability (CVSS 6.0) in Limesurvey, published August 14, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.38%, the 31st percentile. No source names a fixed version.