CVE-2025-27792

Opal vulnerable to CSRF protection bypass

State: Published
Severity: 7.7 High
Published: Mar 11, 2025
Updated: Mar 12, 2025
Reserved: Mar 6, 2025

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.

Scores

CVSS	Score	Vector	Source
4.0	7.7 High	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	GitHub_M

Weaknesses

CWE-352 Cross-Site Request Forgery (CSRF)

Affected Products

Product	Versions
opalobiba	< 5.1.1Affected

References

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

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