Is CVE-2026-23920 in the CISA KEV catalog?

No. CVE-2026-23920 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the EPSS score for CVE-2026-23920?

CVE-2026-23920 has an EPSS score of 0.25% (16th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2026-23920?

Upgrade zabbix on debian 13 to 1:7.0.22+dfsg-1~deb13u1 or later.

CVE & CISA-KEV Catalog

CVE-2026-23920

UNSCORED

NVD

Description

Host and event action script input is validated with a regex (set by the administrator), but the validation runs in multiline mode. If ^ and $ anchors are used in user input validation, an injected newline lets authenticated users bypass the check and inject shell commands.

CWE-78OS Command Injection

How to fix

Remediation Available

zabbixDebian

Fixed in:1:7.0.22+dfsg-1~deb13u1CVE-2026-23920

Fixed in:1:7.0.22+dfsg-1CVE-2026-23920

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3.1 Vector

No CVSS vector data available.

Exploit Intelligence

0.25%probability of exploitation in 30 days

16thpercentile

Low risk: more likely to be exploited than 16% of all known CVEs.

References

Other references1

support.zabbix.com

Related Vulnerabilities

Other CWE-78 (OS Command Injection) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-1498	Critical	9.8	100%	KEV	Fix
CVE-2014-6271	Critical	9.8	100%	KEV	Fix
CVE-2019-16920	Critical	9.8	100%	KEV	-
CVE-2022-44877	Critical	9.8	100%	KEV	Fix
CVE-2020-8515	Critical	9.8	100%	KEV	-
CVE-2020-9054	Critical	9.8	100%	KEV	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-03-25.