XSS in Rails Activesupport

CVE-2023-28120

There is a vulnerability in ActiveSupport if the new bytesplice method is called on a SafeBuffer with untrusted user input.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (56.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-28120?
CVE-2023-28120 is a medium-severity vulnerability in Rails Activesupport, classified under Cross-site Scripting. CVSS score: 5.3/10. Published 2025-01-09.
How severe is CVE-2023-28120?
Medium severity. CVSS v3 base score is 5.3 out of 10.