HIGHCVSS v4 8.7Vulnerability

CVE-2026-63010

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.172, 25.0.108, and 26.0.33, a low-privileged user can create manual reminders containing arbitrary HTML/JavaScript and assign them to any other user (including administrators). When the victim's browser polls for pending notifications, the payload renders unsanitized as innerHTML in the ExtJS notification panel, achieving Stored Cross-Site Scripting (XSS) leading to full Account Takeover (ATO) of the victim's session. This issue has been patched in versions 6.8.172, 25.0.108, and 26.0.33.

Properties

Severity
HIGH
Nvd fetched at
2026-11-10T23:33:48.924589+00:00
Cvss severity
HIGH
Cvss score
8.7
Retrieved at
2026-11-10T23:34:23+00:00
Score
8.7
Cvss version
4.0
Last source
NVD
Cve id
CVE-2026-63010
Cvss vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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
First seen by Signal
2026-11-10T19:28:56+00:00
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 at
2026-11-10T17:17:45.800
Last modified
2026-11-10T17:17:45.800

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CVE-2026-63010 (CVSS v4 8.7) — Ninja Signal Threat Intelligence | Ninja Signal