CVE-2026-102489

Undisclosed RCE in Zammad v6.3 and higher

En bref

Sévérité: HIGH 8.7
Exploitation: Exploitation connue (CISA KEV) · ajoutée le 2026-10-02
Exploitée selon l'ENISA depuis le 2026-09-30
EPSS: EPSS 1.96 % · centile 80 (2026-10-27)
État: PUBLISHED
Publiée: 2026-09-30
Mise à jour: 2026-10-19
Attribuée par: DIVD
Statut NVD: Analyzed

Description

Zammad versions 6.3.0 to 6.5.4 are vulnerable a session hijack vulnerability that leads to remote code execution as the zammad user. The bug is also present in version 7.0.0 to version 7.1.2, but not exploitable due to changes in the underlying framework.

Scores

Version	Score	Vecteur	Évalué par
CVSS 4.0	HIGH 8.7	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:A/AU:Y/V:C	DIVD
CVSS 4.0	CRITICAL 9.4	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y/V:C	DIVD
CVSS 4.0	CRITICAL 9.4	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/R:X/V:C/RE:X/U:X	NVD · csirt@divd.nl (Secondary)
CVSS 3.1	CRITICAL 9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	NVD · nvd@nist.gov (Primary)

Faiblesses (CWE)

CWE-384

Références européennes

ENISA EUVD · EUVD-2026-90080
GCVE · GCVE-0-2026-102489

Configurations affectées (CPE NVD)

cpe:2.3:a:zammad:zammad:*:*:*:*:*:*:*:* ≥ 6.3.0 ≤ 6.5.4

Produits affectés

Produit	Versions
Zammad GmbH · Zammad	unknown * < 6.3.0 ; affected 6.3.0 < 6.5.4 ; unknown 7.0.0 < 7.1.3

Références

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
CISA Known Exploited Vulnerabilities	CC0 1.0
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD