CVE-2020-37071 | CraftCMS 3 vCard Plugin 1.0.0 contains a deserialization vul… | CVSS 9.8 CRITICAL

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.

Metadata

CVE ID: CVE-2020-37071
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-02-01 13:16 UTC
Published: 2026-02-03 22:01 UTC
Last updated: 2026-07-15 01:24 UTC
Primary CWE: CWE-502
Deserialization of Untrusted Data
Vendor / Product: CraftCMS / CraftCMS
Sources: cve.org · NVD

Severity & Metrics

9.8 CRITICAL CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: yes
Tech. Impact: total

Affected products (1)

Vendor	Product	Platform	Versions
CraftCMS	CraftCMS	—	1.0.0

Weakness (CWE)

CWE	Source	Description
CWE-502	cna	Deserialization of Untrusted Data

CVSS scores (2)

Score	Severity	Version	Source	Vector
9.8	CRITICAL	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.3	CRITICAL	4.0	cna	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

References (5)

ExploitDB-48492 https://www.exploit-db.com/exploits/48492
Official CraftCMS Vendor Homepage https://craftcms.com/
CraftCMS vCard Plugin Page https://plugins.craftcms.com/vcard
Researcher Exploit Disclosure https://gitlab.com/wguest/craftcms-vcard-exploit
VulnCheck Advisory: CraftCMS 3 vCard Plugin 1.0.0 - Remote Code Execution https://www.vulncheck.com/advisories/craftcms-vcard-plugin-remote-code-execution