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Highest advisory severityMedium 1 vendor · 1 advisory

CVE-2026-38969

CVE-2026-38969: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.

Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.

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Vendor advisory comparison

Red Hat

1 advisory
  • Advisory severityMedium6.5

    Medium [CVE-2026-38969] Request smuggling via re-parsing of Content-Length header

    CVE-2026-38969Source published Source updated

    ruby webrick through v1.9.2 WEBrick reparses trailer Content-Length into canonical request state, enabling request smuggling. NOTE: the Supplier reports that "The project README states that it is suitable for testing and development, and that its developers do not encourage its use to serve production web applications that may be subject to hostile input. It is not a production web server and is not intended to receive traffic from untrusted sources. Request smuggling is only reachable when WEBrick sits behind a proxy and receives hostile traffic in a production deployment, which is the configuration the project documents as discouraged." This CVE has been marked as Rejected by the assigning CNA. Red Hat severity: not rated. Weakness: CWE-444. Affected Red Hat products: Red Hat Hardened…

    Affected products in this advisory
    • Red Hat Hardened Images
    • Red Hat 3scale API Management Platform 2
    • Red Hat Enterprise Linux 9
    • Red Hat Satellite 6

    1 more entries in the full advisory.

    Source-reported affected versions
    Affected-version details not available in this record.
    Source-reported fixed versions
    • rust-main-1.96.1-1.hum1
    • RHSA-2026:34975
    Mitigation guidance
    • Do not expose WEBrick directly to untrusted network traffic. WEBrick is not designed for production use and should be replaced with a production-grade Ruby application server (e.g., Puma, Unicorn) behind a reverse proxy (e.g., nginx, Apache, HAProxy) that performs its own Content-Length validation and strips or rejects requests with conflicting transfer encoding headers. A patch is available: https://github.com/ruby/webrick/pull/199
    Full advisory and evidenceOpen source bulletin

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