CVE-2020-13564

Name: CVE-2020-13564
Creator: NVD / NIST
Published: 2021-02-01T16:15:12.547+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 75.86%

Last modified Jun 17, 2026

CVE-2020-13564 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP request can lead to arbitrary JavaScript execution. EPSS estimates a 75.86% chance of exploitation in the next 30 days.

Description

A cross-site scripting vulnerability exists in the template functionality of phpGACL 3.3.7. A specially crafted HTTP request can lead to arbitrary JavaScript execution. An attacker can provide a crafted URL to trigger this vulnerability in the phpGACL template acl_id parameter.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

75.86%

99.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Phpgacl Project	Phpgacl	3.3.7
Open-Emr	Openemr	5.0.2

References

https://talosintelligence.com/vulnerability_reports/TALOS-2020-1177Exploit, Third Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1177Exploit, Third Party Advisory

Timeline

Published: Feb 1, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13564?

How severe is CVE-2020-13564?

CVE-2020-13564 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 75.86% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13564?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13564?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST