CVE-2020-15803

Name: CVE-2020-15803
Creator: NVD / NIST
Published: 2020-07-17T03:15:11.437+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 32.30%

Last modified Jun 17, 2026

CVE-2020-15803 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Zabbix before 3.0.32rc1, 4.x before 4.0.22rc1, 4.1.x through 4.4.x before 4.4.10rc1, and 5.x before 5.0.2rc1 allows stored XSS in the URL Widget.. EPSS estimates a 32.30% chance of exploitation in the next 30 days.

Description

Zabbix before 3.0.32rc1, 4.x before 4.0.22rc1, 4.1.x through 4.4.x before 4.4.10rc1, and 5.x before 5.0.2rc1 allows stored XSS in the URL Widget.

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

32.30%

98.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions	Update
Zabbix	Zabbix	<= 3.0.31	—
Zabbix	Zabbix	>= 4.0.0, <= 4.0.21	—
Zabbix	Zabbix	>= 4.4, <= 4.4.9	—
Zabbix	Zabbix	>= 5.0.0, <= 5.0.1	—
Zabbix	Zabbix	3.0.32	Rc1
Zabbix	Zabbix	4.0.22	—
Zabbix	Zabbix	4.4.10	—
Zabbix	Zabbix	5.0.2	—
Fedoraproject	Fedora	31	—
Fedoraproject	Fedora	32	—
Debian	Debian Linux	9.0	—
Opensuse	Backports	sle-15	Sp1
Opensuse	Leap	15.1	—
Opensuse	Leap	15.2	—

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00007.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00007.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZHHIUYIVA5GZYLKW6A5G6HRELPOBZFE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TIRIMOXH6GSBAANDCB3ANLJK4CRLWRXT/
https://support.zabbix.com/browse/ZBX-18057Patch, Vendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00007.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00007.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00018.htmlMailing List, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2ZHHIUYIVA5GZYLKW6A5G6HRELPOBZFE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TIRIMOXH6GSBAANDCB3ANLJK4CRLWRXT/
https://support.zabbix.com/browse/ZBX-18057Patch, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2020-15803?

Zabbix before 3.0.32rc1, 4.x before 4.0.22rc1, 4.1.x through 4.4.x before 4.4.10rc1, and 5.x before 5.0.2rc1 allows stored XSS in the URL Widget.

How severe is CVE-2020-15803?

CVE-2020-15803 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 32.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-15803?

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-2020-15803?

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

Scan your code now

Source: NVD / NIST