CVE-2025-56422 Deserialization in n/a
A remote attacker can execute arbitrary code on the server via a deserialization flaw in LimeSurvey.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-56422?
CVE-2025-56422 is a critical unsafe deserialization vulnerability in Limesurvey Limesurvey, published on 10 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A deserialization vulnerability in LimeSurvey before v6.15.0+250623 allows a remote attacker to execute arbitrary code on the server.
Weakness: CWE-502
Which versions are affected by CVE-2025-56422?
It affects 1 product.
Products include Limesurvey Limesurvey.
How do I fix CVE-2025-56422?
No fix has been published for CVE-2025-56422 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2025-56422 being exploited?
There is no known exploitation of CVE-2025-56422 in the wild and no public exploit code.
Other vulnerabilities in Limesurvey Limesurvey
Sources
Also known as GHSA-qmh9-5pqq-f7wq.