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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.

PUBLISHED Reserved 2026-02-01 | Published 2026-02-03 | Updated 2026-02-04 | Assigner VulnCheck




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

Problem types

Deserialization of Untrusted Data

Product status

1.0.0
affected

Credits

Wade Guest finder

References

www.exploit-db.com/exploits/48492 (ExploitDB-48492) exploit

craftcms.com/ (Official CraftCMS Vendor Homepage) product

plugins.craftcms.com/vcard (CraftCMS vCard Plugin Page) product

gitlab.com/wguest/craftcms-vcard-exploit (Researcher Exploit Disclosure) technical-description exploit

www.vulncheck.com/...tcms-vcard-plugin-remote-code-execution (VulnCheck Advisory: CraftCMS 3 vCard Plugin 1.0.0 - Remote Code Execution) third-party-advisory

cve.org (CVE-2020-37071)

nvd.nist.gov (CVE-2020-37071)

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