CVE-2026-18403 LimeSurvey Community Edition 7.0.5 - Authenticated SQL injection in CPDB
Authenticated attackers can inject SQL commands via the Central Participant Database workflow to read or modify survey participant data.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18403?
CVE-2026-18403 is a medium-severity SQL injection vulnerability in LimeSurvey, published on 14 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-89
Which versions are affected by CVE-2026-18403?
How do I fix CVE-2026-18403?
No fix has been published for CVE-2026-18403 yet. Limit exposure of the affected software until one is available.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-18403 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-18403 exists.
Sources
Also known as GHSA-fxx2-xm5f-gmf5.