Vulnerability · Published Mar 11, 2025 · Assigned by GitHub_M

CVE-2025-27792Opal vulnerable to CSRF protection bypass

High 7.7

In plain English

A high-severity cross-site request forgery in opal from obiba. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 22% of all known vulnerabilities).

Severity (CVSS 4.0)7.7High

Exploit odds (30 days)0.3%top 78.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
obiba	opal	< 5.1.1

Weakness: CWE-352 · Vector: 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

References

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