Privilege escalation via unrestricted profile field updates
Published Sep 2, 2026 · Updated Sep 2, 2026
Mass assignment in 沃之涛科技 勾股OA办公系统 5.10.0 and earlier and 6.0.0 through 6.0.1 allows remote authenticated users to gain elevated RBAC access. The edit_personal update function passes all request parameters to ThinkPHP strict(false)->field(true)->update(), permitting position_id in the oa_admin row to be overwritten. Any employee account can set its own position_id to the maximum-privilege role, exposing user records and administrative configuration while leaving the hardcoded uid 1 identity unchanged.
Summary
What happened
Mass assignment in 沃之涛科技 勾股OA办公系统 5.10.0 and earlier and 6.0.0 through 6.0.1 allows remote authenticated users to gain elevated RBAC access. The edit_personal update function passes all request parameters to ThinkPHP strict(false)->field(true)->update(), permitting position_id in the oa_admin row to be overwritten. Any employee account can set its own position_id to the maximum-privilege role, exposing user records and administrative configuration while leaving the hardcoded uid 1 identity unchanged.
The record
- CVE
- CVE-2026-84430
- Published
- Sep 2, 2026
- Updated
- Sep 2, 2026
- Vendor
- 广西南宁领众网络科技有限公司
- Product
- 勾股OA办公系统
- Classifications
- CWE-913, CWE-915, T1098
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 2, 2026CVE publishedPublication date reported by the CVE source.
- Sep 2, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=5.0
- Affected versionversion=5.1
- Affected versionversion=5.10.0
- Affected versionversion=5.2
- Affected versionversion=5.3
- Affected versionversion=5.4
- Affected versionversion=5.5
- Affected versionversion=5.6
- Affected versionversion=5.7
- Affected versionversion=5.8
- Affected versionversion=5.9
- Affected versionversion=6.0.0
- Affected versionversion=6.0.1
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GouGuOA mass-assignment privilege-escalation proof of conceptfunctional · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
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