CVE-2026-25511CWE-918

Group-Office is vulnerable to SSRF and File Read in WOPI service discovery

High · published February 4, 2026

CVSS v4.0
8.2
EPSS
0%
Percentile
39.7
In the wild
Unconfirmed
What it is

Group-Office is an enterprise customer relationship management and groupware tool. Prior to versions 6.8.150, 25.0.82, and 26.0.5, an authenticated user within the System Administrator group can trigger a full SSRF via the WOPI service discovery URL, including access to internal hosts/ports. The SSRF response body can be exfiltrated via the built‑in debug system, turning it into a visible SSRF. This also allows full server-side file read. This issue has been patched in versions 6.8.150, 25.0.82, and 26.0.5.

The record
Technical detail
CVSS v4.0
8.2 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00470 · 39.7th percentile
Weakness
CWE-918 · Server-Side Request Forgery (SSRF)
Published
2026-02-04T20:40Z
EPSS history
Timeline
  • 04 FEB 20:40Z
    Group-Office is vulnerable to SSRF and File Read in WOPI service discovery
    cvelistv5