CVE-2020-13653

Name: CVE-2020-13653
Creator: NVD / NIST
Published: 2020-07-02T16:15:11.577+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 1.39%

Last modified Jun 17, 2026

CVE-2020-13653 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. An XSS vulnerability exists in the Webmail component of Zimbra Collaboration Suite before 8.8.15 Patch 11. It allows an attacker to inject executable JavaScript into the account name of a user's profile. EPSS estimates a 1.39% chance of exploitation in the next 30 days.

Description

An XSS vulnerability exists in the Webmail component of Zimbra Collaboration Suite before 8.8.15 Patch 11. It allows an attacker to inject executable JavaScript into the account name of a user's profile. The injected code can be reflected and executed when changing an e-mail signature.

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

1.39%

68.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Synacor	Zimbra Collaboration Suite	< 8.8.15
Synacor	Zimbra Collaboration Suite	8.8.15

References

https://wiki.zimbra.com/wiki/Security_CenterRelease Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P11Release Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P4Release Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory
https://wiki.zimbra.com/wiki/Security_CenterRelease Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/8.8.15/P11Release Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Releases/9.0.0/P4Release Notes, Vendor Advisory
https://wiki.zimbra.com/wiki/Zimbra_Security_AdvisoriesVendor Advisory

Timeline

Published: Jul 2, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13653?

How severe is CVE-2020-13653?

CVE-2020-13653 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 1.39% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13653?

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-2020-13653?

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

Scan your code now

Source: NVD / NIST