CVE catalog

CVE-2026-23933

Severity: High · CVSS 8.8CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: Aug 18, 2026, 12:18:09 PM UTC
Updated: Aug 18, 2026, 2:17:01 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.57% · Oct 25, 2026

In Zabbix 7.4 the cryptographic key used for signing Frontend sessions has been erroneously written to the database seed. Currently the only known exploitation scenario is for deployments that utilize both - SAML authentication and guest users. In such cases the key can be used to forge valid session cookies, potentially leading to unauthorized access. For other Zabbix deployments this does not have a known impact.

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	`7.4.11`	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	`7.4.11`	Not reported	NVD-CVE-2026-23933	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, 9:38:45 PM UTC

References

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