What is CVE-2026-32762?

CVE-2026-32762 is a medium-severity vulnerability in Rack, classified under CWE-436. CVSS score: 4.8/10. Published 2026-04-02.

How severe is CVE-2026-32762?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Vulnerability in Rack

CVE-2026-32762

Rack is a modular Ruby web server interface. From versions 3.0.0.beta1 to before 3.1.21 and 3.2.0 to before 3.2.6, Rack::Utils.forwarded_values parses the RFC 7239 Forwarded header by splitting on semicolons before handling quoted-string v…

EPSS: 0.000 (15.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Rack — versions >= 3.0.0.beta1, < 3.1.21, >= 3.2.0, < 3.2.6

Weakness classification (CWE)

CWE-436

References

https://github.com/rack/rack/security/advisories/GHSA-qfgr-crr9-7r49 (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-32762?: CVE-2026-32762 is a medium-severity vulnerability in Rack, classified under CWE-436. CVSS score: 4.8/10. Published 2026-04-02.
How severe is CVE-2026-32762?: Medium severity. CVSS v3 base score is 4.8 out of 10.