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CVE-2025-27792— Opal vulnerable to CSRF protection bypass

Quick assessment

Affected
obiba opal
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.

Opal是Open Source Software for Epidemiology开源的一个用于生物库或流行病学研究的核心数据库应用程序。 Opal 5.1.1之前版本存在跨站请求伪造漏洞，该漏洞源于跨站请求伪造防护不足，攻击者可以通过删除referrer头绕过防护。

AI Predicted 6.5 Difficulty: Easy EPSS 0.28% · P20

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2025-27792

Vulnerability Information
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Vulnerability Title
Opal vulnerable to CSRF protection bypass
Source: CVE Program / CVE List V5
Vulnerability Description
Opal is OBiBa’s core database application for biobanks or epidemiological studies. Prior to version 5.1.1, the protections against cross-site request forgery (CSRF) were insufficient application-wide. The referrer header is checked, and if it is invalid, the server returns 403. However, the referrer header can be dropped from CSRF requests using `<meta name="referrer" content="never">`, effectively bypassing this protection. Version 5.1.1 contains a patch for the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
Source: CVE Program / CVE List V5
Vulnerability Type
跨站请求伪造(CSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Opal 跨站请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Opal是Open Source Software for Epidemiology开源的一个用于生物库或流行病学研究的核心数据库应用程序。 Opal 5.1.1之前版本存在跨站请求伪造漏洞，该漏洞源于跨站请求伪造防护不足，攻击者可以通过删除referrer头绕过防护。
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
obiba opal < 5.1.1 -

II. Public POCs for CVE-2025-27792

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III. Intelligence Information for CVE-2025-27792

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Vendor Advisories for CVE-2025-27792 (1)

IV. Related Vulnerabilities

Same product: opal
Same vendor: obiba
Same weakness: CWE-352

V. Comments for CVE-2025-27792

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