How severe is CVE-2025-27792?

CVE-2025-27792 has a CVSS 4.0 base score of 7.7, rated high severity.

Is CVE-2025-27792 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

How do I fix CVE-2025-27792?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2025-27792 have an EU (EUVD) identifier?

Yes. CVE-2025-27792 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7807.

When was CVE-2025-27792 published?

CVE-2025-27792 was published on 2025-03-11 and last updated on 2026-06-17.

CVE-2025-27792

CVE-2025-27792 is a high-severity vulnerability with a CVSS 4.0 base score of 7.7. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-352.

Key facts

Severity: High (CVSS 4.0 base score 7.7)
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-7807
Weakness: CWE-352
Published: 2025-03-11
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2025-27792?: 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.
How severe is CVE-2025-27792?: CVE-2025-27792 has a CVSS 4.0 base score of 7.7, rated high severity.
Is CVE-2025-27792 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
How do I fix CVE-2025-27792?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2025-27792 have an EU (EUVD) identifier?: Yes. CVE-2025-27792 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-7807.
When was CVE-2025-27792 published?: CVE-2025-27792 was published on 2025-03-11 and last updated on 2026-06-17.

References

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

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