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Vulnerability record · CVE-2020-15803 · published 17 July 2020

CVE-2020-15803: Zabbix cross-site scripting vulnerability

Zabbix · Zabbix

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.

6.1 CVSS 3.1 Medium EPSS 32% · top 1.7% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
5Affected product versions listed by NVD
14References
17 Jun 2026Last modified by NVD

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.

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

Affected products

5 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00007.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00007.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00018.html Mailing ListThird 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/2ZHHIUYIVA5GZYLKW6A5G6H
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TIRIMOXH6GSBAANDCB3ANLJ
https://support.zabbix.com/browse/ZBX-18057 PatchVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00007.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2020/08/msg00007.html Mailing ListThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/04/msg00018.html Mailing ListThird 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/2ZHHIUYIVA5GZYLKW6A5G6H
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TIRIMOXH6GSBAANDCB3ANLJ
https://support.zabbix.com/browse/ZBX-18057 PatchVendor Advisory

Track CVE-2020-15803 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

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Source: NIST National Vulnerability Database (record CVE-2020-15803), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.