CVE-2020-9860

Name: CVE-2020-9860
Creator: NVD / NIST
Published: 2020-10-27T21:15:15.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5.4/10EPSS 0.99%

Last modified Jun 17, 2026

CVE-2020-9860 is a medium-severity vulnerability rated 5.4/10 on the CVSS scale. A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 13.0.5. EPSS estimates a 0.99% chance of exploitation in the next 30 days.

Description

A custom URL scheme handling issue was addressed with improved input validation. This issue is fixed in Safari 13.0.5. Processing a maliciously crafted URL may lead to arbitrary javascript code execution.

Metrics

CVSS 3.1

5.4/10

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

EPSS Probability

0.99%

57.9th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Apple	Safari	< 13.0.5

References

https://support.apple.com/en-us/HT210922Release Notes, Vendor Advisory
https://support.apple.com/en-us/HT210922Release Notes, Vendor Advisory

Timeline

Published: Oct 27, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-9860?

How severe is CVE-2020-9860?

CVE-2020-9860 has a CVSS score of 5.4/10 (MEDIUM severity). The EPSS model estimates a 0.99% probability of exploitation in the next 30 days.

How do I fix CVE-2020-9860?

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-2020-9860?

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

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Source: NVD / NIST