GHSA-x72f-ggjw-v5xh · Severity: high · Ecosystem: composer — Drupal Core Arbitrary PHP code execution vulnerability
Arbitrary PHP code execution vulnerability in Drupal Core under certain circumstances. An attacker could trick an administrator into visiting a malicious site that could result in creating a carefully named directory on the file system. With this directory in place, an attacker could attempt to brute force a remote code execution vulnerability. Windows servers are most likely to be affected. This issue affects: Drupal Drupal Core 8.8.x versions prior to 8.8.8; 8.9.x versions prior to 8.9.1; 9.0.1 versions prior to 9.0.1.
Conclusion & alert: CVE-2020-13664 is rated High Risk (66.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.98%). Core evidence: EPSS rose +1.02% over the last day, indicating growing attacker interest. Mandatory action: High exploitation likelihood—assess exposure and prioritize remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 1.96% | 2.98% | +1.02% |
| 2 | 2025-12-28 | 1.32% | 1.96% | +0.64% |
| 3 | 2025-12-27 | — | 1.32% | — |
Full EPSS history (20 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 9.3 | 2.0 | HIGH |
|
8.6 | 10.0 | [email protected] |
GHSA-x72f-ggjw-v5xh · Severity: high · Ecosystem: composer — Drupal Core Arbitrary PHP code execution vulnerability
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2020-13664 medium priority: Ubuntu including 1 source packages (drupal7), 12 status rows across 12 suites (bionic, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, trusty, upstream, xenial): DNE 9, not-affected 3. | https://ubuntu.com/security/CVE-2020-13664 |
| URL | Tags |
|---|---|
| https://www.drupal.org/sa-core-2020-005 | Vendor Advisory |