What is CVE-2025-27220?

CVE-2025-27220 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

Which CVE IDs does CVE-2025-27220 cover?

CVE-2025-27220 covers the following CVE IDs: CVE-2025-27220. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-27220?

CVE-2025-27220 has a CVSS v3 base score of 4.0, published by Microsoft Security Response Center (MSRC).

CVE-2025-27220MediumCVSS 4.0

In the CGI gem before 0.4.2 for Ruby, a Regular Expression Denial of Service (ReDoS) vulnerability exists in the Util#escapeElement method.

Vendor

Microsoft Security Response Center (MSRC)

Published

July 11, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-27220 →