CVE-2025-54834— OPEXUS FOIAXpress Public Access Link (PAL) unauthenticated username enumeration
Quick assessment
Affected
OPEXUS FOIAXpress Public Access Link (PAL)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
OPEXUS FOIAXpress Public Access Link（OPEXUS FOIAXpress PAL）是OPEXUS公司的一个面向公众的安全 Web 门户，将机构与请求者联系起来，并与支付解决方案集成，包括支付解决方案。 OPEXUS FOIAXpress Public Access Link（OPEXUS FOIAXpress PAL） v11.1.0版本存在安全漏洞，该漏洞源于缺乏速率限制机制，可能导致枚举有效用户名。
Possible ATT&CK Techniques 2 AI
T1083 · File and Directory Discovery T1591 · Gather Victim Org Information
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I. Basic Information for CVE-2025-54834
Vulnerability Information
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Vulnerability Title
OPEXUS FOIAXpress Public Access Link (PAL) unauthenticated username enumeration
Source: CVE Program / CVE List V5
Vulnerability Description
OPEXUS FOIAXpress Public Access Link (PAL) version v11.1.0 allows an unauthenticated, remote attacker to query the /App/CreateRequest.aspx endpoint to check for the existence of valid usernames. There are no rate-limiting mechanisms in place.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
响应差异性信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
OPEXUS FOIAXpress Public Access Link（OPEXUS FOIAXpress PAL） 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OPEXUS FOIAXpress Public Access Link（OPEXUS FOIAXpress PAL）是OPEXUS公司的一个面向公众的安全 Web 门户，将机构与请求者联系起来，并与支付解决方案集成，包括支付解决方案。 OPEXUS FOIAXpress Public Access Link（OPEXUS FOIAXpress PAL） v11.1.0版本存在安全漏洞，该漏洞源于缺乏速率限制机制，可能导致枚举有效用户名。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| OPEXUS | FOIAXpress Public Access Link (PAL) | 11.1.0 ~ 11.12.3.0 | - |
|
II. Public POCs for CVE-2025-54834
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · OPEXUS · 2025-07-31 · 3 CVEs total
| CVE-2025-54833 | 5.3 MEDIUM | OPEXUS FOIAXpress Public Access Link (PAL) account-lockout and CAPTCHA protection bypass |
| CVE-2025-54832 | 4.3 MEDIUM | OPEXUS FOIAXpress Public Access Link (PAL) state and territory list unauthorized modificat |
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