How to fix CVE-2025-9646?

Within 30 days: Identify affected systems running O2OA and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.

Is O2oa affected by CVE-2025-9646?

Organizations using O2OA should be aware of moderate risk from CVE-2025-9646, a cross-site scripting vulnerability rated CVSS 5.1. Attackers could inject scripts to steal sessions or perform actions as authenticated users. Proof-of-concept code is publicly available.

CVE-2025-9646

MEDIUM

2025-08-29 [email protected]

5.1

CVSS 4.0

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

Scope

Lifecycle Timeline

Analysis Generated

Mar 28, 2026 - 19:09 vuln.today

PoC Detected

Sep 16, 2025 - 16:37 vuln.today

Public exploit code

CVE Published

Aug 29, 2025 - 13:15 nvd

MEDIUM 5.1

Description

A security flaw has been discovered in O2OA up to 10.0-410. This vulnerability affects unknown code of the file /x_organization_assemble_personal/jaxrs/definition/calendarConfig. The manipulation of the argument toMonthViewName results in cross site scripting. The attack can be launched remotely. The exploit has been released to the public and may be exploited. The vendor replied in the GitHub issue (translated from simplified Chinese): "This issue will be fixed in the new version."

Analysis

A security flaw has been discovered in O2OA up to 10.0-410. Rated medium severity (CVSS 5.1), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.

Technical Context

This vulnerability is classified as Cross-Site Scripting (XSS) (CWE-79), which allows attackers to inject malicious scripts into web pages viewed by other users. A security flaw has been discovered in O2OA up to 10.0-410. This vulnerability affects unknown code of the file /x_organization_assemble_personal/jaxrs/definition/calendarConfig. The manipulation of the argument toMonthViewName results in cross site scripting. The attack can be launched remotely. The exploit has been released to the public and may be exploited. The vendor replied in the GitHub issue (translated from simplified Chinese): "This issue will be fixed in the new version." Affected products include: Zoneland O2Oa. Version information: up to 10.0.

Affected Products

Zoneland O2Oa.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Sanitize all user input, use Content-Security-Policy headers, encode output contextually (HTML, JS, URL). Use frameworks with built-in XSS protection.

Priority Score

Low Medium High Critical

KEV: 0

EPSS: +0.0

CVSS: +26

POC: +20

CVE-2025-9646 vulnerability details – vuln.today

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CVE-2025-9646

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CVE-2025-9646

CVSS Vector

Lifecycle Timeline

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Description

Analysis

Technical Context

Affected Products

Remediation

Priority Score

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External POC / Exploit Code