CVE-2026-38969

ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling.

CVE-2026-38969 is fixed in ruby-webrick on 1 platform by DEBIAN-CVE-2026-38969 (version 1.9.2-2), released July 8, 2026. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Moderate

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

n/a

Where it's fixed

Product	Fixed in	Fix	Released
Linux
ruby-webrick · Debian 14	1.9.2-2	DEBIAN-CVE-2026-38969	Jul 8, 2026

Details

Published
July 2, 2026
Weakness
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-38969

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