CVE catalog

CVE-2026-23923

An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes. The impact depends on environment setup but appears limited at this time.

[CVE catalog]

Severity: Medium · CVSS 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published: Mar 24, 2026, 6:29:23 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.28% · Oct 27, 2026

An unauthenticated attacker can exploit the Frontend 'validate' action to blindly instantiate arbitrary PHP classes. The impact depends on environment setup but appears limited at this time.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	zabbix	sid	`1:7.0.29+dfsg-2`	not affected
Debian	zabbix	forky	`1:7.0.29+dfsg-2`	not affected
Debian	zabbix	trixie	`1:7.0.22+dfsg-1~deb13u1`	not affected
Debian	zabbix	bookworm	`1:6.0.14+dfsg-1`	not affected
Cpe	zabbix	Not reported	`7.4.7`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	zabbix	source	sid	`Not affected`	unimportant	Not reported	Not reported
Debian	zabbix	source	forky	`Not affected`	unimportant	Not reported	Not reported
Debian	zabbix	source	trixie	`Not affected`	unimportant	Not reported	Not reported
Debian	zabbix	source	bookworm	`Not affected`	unimportant	Not reported	Not reported
Cpe	zabbix	cpe	Not reported	`7.4.7`	Not reported	NVD-CVE-2026-23923	Not reported

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[zabbix-agent]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-agent2]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-frontend-php]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1 · all · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1 · all · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-java-gateway]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1 · all · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1 · all · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · all · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-proxy-mysql]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-proxy-pgsql]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-proxy-sqlite3]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-sender]Not affected
Source package: [zabbix]
Details (2)
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-server-mysql]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-server-pgsql]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
[zabbix-web-service]Not affected
Source package: [zabbix]
Details (4)
- 1:6.0.14+dfsg-1+b1 · amd64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:6.0.14+dfsg-1+b1 · arm64 · bookworm
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · amd64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm
- 1:7.0.9+dfsg-1~bpo12+1 · arm64 · bookworm-backports
  Not affected
  nvd · zabbix · debian · bookworm

Observed: Oct 23, 2026, 10:39:03 PM UTC

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [Red Hat security advisories and VEX]