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Group Office CVE-2026-25511

MEDIUM
Server-Side Request Forgery (SSRF) (CWE-918)
2026-02-04 security-advisories@github.com
SSRF Group Office
4.9
CVSS 3.1 · GitHub Advisory
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Severity by source

GitHub Advisory PRIMARY
4.9 MEDIUM
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Primary rating from GitHub Advisory · only source for this CVE.

CVSS VectorGitHub Advisory

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

Lifecycle Timeline

4
Analysis Generated
Mar 12, 2026 - 21:54 vuln.today
PoC Detected
Feb 11, 2026 - 19:16 vuln.today
Public exploit code
Patch released
Feb 11, 2026 - 19:16 nvd
Patch available
CVE Published
Feb 04, 2026 - 21:16 nvd
MEDIUM 4.9

DescriptionGitHub Advisory

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.

AnalysisAI

Server-side request forgery in Group Office's WOPI service discovery allows authenticated System Administrators to access internal hosts, ports, and files on the affected server. The vulnerability enables attackers to exfiltrate SSRF response bodies through the debug system, effectively converting a blind SSRF into a visible information disclosure attack. …

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Vulnerability AssessmentAI

Risk Assessment CVSS 4.9 (MEDIUM). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An attacker (requires authentication) could exploit this vulnerability to compromise the affected system.
Remediation A vendor patch is available — apply it immediately. … Detailed patch versions, workarounds, and compensating controls in full report.
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Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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CVE-2026-25511 vulnerability details – vuln.today
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