CVE-2025-27792

7.7 highEPSS 0.3%

High (7.7). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 21% of CVEs (scores of 2026-10-31)
CWE: CWE-352
Published: 2025-03-11
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

References

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

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