9.8

CVE-2020-37071: craftcms Deserialization of Untrusted Data

CVSS: 9.8v3.1CriticalDeferred
Published 03-02-2026Last modified 15-07-2026
Open JSON

Vulnerability summary

CVE-2020-37071 is a critical (CVSS 9.8) Deserialization of Untrusted Data vulnerability in craftcms. EPSS estimates a 0.73% chance of exploitation in the next 30 days, higher than 53.4% of scored vulnerabilities. 2 public exploits are recorded.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.8/10
010
Critical · v3.1 (CVE.org)
EPSS score
0.73%
0%100%
Low · +0.09 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits2exploit-database, reference

Timeline

  1. 03-02-2026
    PublishedVulnerability first disclosed.
  2. 15-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 2 sources · 2 versions

EPSS trend

Probability

0.73%

Chance of exploitation in the next 30 days

Percentile

53%

Versus all other CVEs

30-day change

+0.09 pp

From 0.64% on 20-09-2026

20-09-202620-10-2026
EPSS score
0.73%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

2 found
  • exploit-databasephpUnverified

    CraftCMS 3 vCard Plugin 1.0.0 - Remote Code Execution

    Maturity: poc

  • referenceUnverified

    Exploit Reference (gitlab.com)

    Maturity: unknown

Weaknesses

CWE · root cause

Affected systems

Craftcms1 product

1 vendor · 1 product

References

5 links