CVE-2020-37071 CraftCMS 3 vCard Plugin 1.0.0 - Remote Code Execution
Unauthenticated attackers can execute arbitrary PHP code via a crafted serialized payload in the CraftCMS vCard plugin.
- 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-2020-37071?
CVE-2020-37071 is a critical unsafe deserialization vulnerability in CraftCMS, published on 3 Feb 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
CraftCMS 3 vCard Plugin 1.0.0 contains a deserialization vulnerability that allows unauthenticated attackers to execute arbitrary PHP code through a crafted payload. Attackers can generate a malicious serialized payload that triggers remote code execution by exploiting the plugin's vCard download functionality with a specially crafted request.
Weakness: CWE-502
Which versions are affected by CVE-2020-37071?
How do I fix CVE-2020-37071?
No fix has been published for CVE-2020-37071 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-2020-37071 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-37071 exists.
Sources
Also known as GHSA-m7vh-5428-ff4x.