CVE-2020-13563

Improper Neutralization of Script-Related HTML Tags in a Web Page

CVSS 3.0 Critical 9.6

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

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 group_id parameter.

Key data

CVSS 3.0 Critical 9.6

Score published by talos in the CVE record.

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H

Attack vector: Network
The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity: Low
No special conditions are needed. The attack can be repeated at will.
Privileges required: None
No account or privileges are needed.
User interaction: Required
A user has to do something first, such as opening a file or following a link.
Scope: Changed
The impact can reach other components beyond the vulnerable one.
Confidentiality impact: High
Serious or total effect on the secrecy of data.
Integrity impact: High
Serious or total effect on the trustworthiness of data.
Availability impact: High
Serious or total effect on availability.

Metric	Value	What it means
Attack vector	Network	The vulnerable component can be reached over a network, possibly from the Internet.
Attack complexity	Low	No special conditions are needed. The attack can be repeated at will.
Privileges required	None	No account or privileges are needed.
User interaction	Required	A user has to do something first, such as opening a file or following a link.
Scope	Changed	The impact can reach other components beyond the vulnerable one.
Confidentiality impact	High	Serious or total effect on the secrecy of data.
Integrity impact	High	Serious or total effect on the trustworthiness of data.
Availability impact	High	Serious or total effect on availability.

CVSS is owned and managed by FIRST.Org, Inc. (FIRST) and is used by permission. Each CVSS score on this site is shown together with its vector string, as published in the CVE record by the source named next to it. Learn more at first.org/cvss.

EPSS

Exploit Prediction Scoring System by FIRST: an estimate of the probability that exploitation activity will be observed in the next 30 days.

Score: 0.75856 (75.9% probability)
Percentile: 99.5%
Scores of: Nov 10, 2026
Model: v2026.06.15

Weakness (CWE)

CWE catalog version 5.0.

CWE-80Improper Neutralization of Script-Related HTML Tags in a Web Page

Affected products

Products listed in the CVE record, as the CNA published them.

phpGACL
- affected: phpGACL 3.3.7 , OpenEMR 5.0.2 , OpenEMR development version 6.0.0 (commit babec93f600ff1394f91ccd512bcad85832eb6ce)

References

Links listed in the CVE record. They lead to other sites, which CubePath does not control.

talosintelligence.com/vulnerability_reports/TALOS-2020-1177

Timeline

ID reservedMay 26, 2020
Record publishedFeb 1, 2021
Record last updatedAug 4, 2024

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Data from the CVE Program (MITRE), CISA KEV and FIRST EPSS. CVSS is owned by FIRST and used by permission. Not affiliated with or endorsed by MITRE, CISA or FIRST. Data as of Nov 10, 2026, 19:51 UTC. Sources and licenses