What is CVE-2026-25511?

CVE-2026-25511 is a medium-severity vulnerability in Group-office Group_office, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.9/10. Published 2026-02-04.

How severe is CVE-2026-25511?

Medium severity. CVSS v3 base score is 4.9 out of 10.

SSRF in Group-office Group_office

CVE-2026-25511

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 dis…

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.004 (32.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Group-office Group_office
Intermesh Groupoffice — versions < 6.8.150, < 25.0.82, < 26.0.5

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-25511?: CVE-2026-25511 is a medium-severity vulnerability in Group-office Group_office, classified under Server-Side Request Forgery (SSRF). CVSS score: 4.9/10. Published 2026-02-04.
How severe is CVE-2026-25511?: Medium severity. CVSS v3 base score is 4.9 out of 10.