Vulnerability · Published Feb 4, 2026 · Assigned by GitHub_M
CVE-2026-25511Group-Office is vulnerable to SSRF and File Read in WOPI service discovery
High 8.2
In plain English
A high-severity server-side request forgery in groupoffice from Intermesh. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 38% of all known vulnerabilities).
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Intermesh | groupoffice | < 6.8.150< 25.0.82< 26.0.5 |
Weakness: CWE-918 · 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