What is CVE-2020-27975?

CVE-2020-27975 is a high-severity vulnerability in Oscommerce, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2020-10-28.

How severe is CVE-2020-27975?

High severity. CVSS v3 base score is 8.8 out of 10.

CSRF in Oscommerce

CVE-2020-27975

osCommerce Phoenix CE before 1.0.5.4 allows admin/define_language.php CSRF.

Vulnerability class: CSRF (Cross-Site Request Forgery)

Published 2020-10-28 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.006 (47.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: 0.000

Affected products

Oscommerce

Weakness classification (CWE)

CWE-352 — Cross-Site Request Forgery (CSRF)

References

herolab.usd.de/security-advisories/usd-2020-0027/ (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2020-27975?: CVE-2020-27975 is a high-severity vulnerability in Oscommerce, classified under Cross-Site Request Forgery (CSRF). CVSS score: 8.8/10. Published 2020-10-28.
How severe is CVE-2020-27975?: High severity. CVSS v3 base score is 8.8 out of 10.