What is the severity of CVE-2025-27792?

CVE-2025-27792 has been classified as a medium severity vulnerability due to insufficient protections against cross-site request forgery (CSRF).

How do I fix CVE-2025-27792?

To fix CVE-2025-27792, upgrade to OBiBa Opal version 5.1.1 or later, which includes improved CSRF defenses.

What type of vulnerability is CVE-2025-27792?

CVE-2025-27792 is a cross-site request forgery (CSRF) vulnerability that affects the Opal application.

What versions of OBiBa Opal are affected by CVE-2025-27792?

CVE-2025-27792 affects all versions of OBiBa Opal prior to version 5.1.1.

What could an attacker potentially achieve by exploiting CVE-2025-27792?

An attacker exploiting CVE-2025-27792 could perform unauthorized actions on behalf of users without their consent.

Vulnerability/
CVE-2025-27792

high

7.7

CWE

352

EPSS

0.043%

11/3/2025

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

First published: Tue Mar 11 2025(Updated: )

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.

Credit: security-advisories@github.com

Affected Software	Affected Version	How to fix
OBiBa Opal	<5.1.1

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Reference Links

https://github.com/obiba/opal/security/advisories/GHSA-27vw-29rq-c358

Frequently Asked Questions

What is the severity of CVE-2025-27792?
CVE-2025-27792 has been classified as a medium severity vulnerability due to insufficient protections against cross-site request forgery (CSRF).
How do I fix CVE-2025-27792?
To fix CVE-2025-27792, upgrade to OBiBa Opal version 5.1.1 or later, which includes improved CSRF defenses.
What type of vulnerability is CVE-2025-27792?
CVE-2025-27792 is a cross-site request forgery (CSRF) vulnerability that affects the Opal application.
What versions of OBiBa Opal are affected by CVE-2025-27792?
CVE-2025-27792 affects all versions of OBiBa Opal prior to version 5.1.1.
What could an attacker potentially achieve by exploiting CVE-2025-27792?
An attacker exploiting CVE-2025-27792 could perform unauthorized actions on behalf of users without their consent.

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