XSS in Zabbix

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.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.323 (98.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2020-15803?
CVE-2020-15803 is a medium-severity vulnerability in Zabbix, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-07-17.
How severe is CVE-2020-15803?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-15803 known to be exploited?
2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.