CVE-2018-16471

There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the `scheme` method on `Rack::Request`. Applications that expect the scheme to be limited to 'http' or 'https' and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted, but applications that bypass the escaping mechanisms, or do not use them may be vulnerable.

• CWE-79
• CWE-79

• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html
• https://groups.google.com/forum/#%21topic/rubyonrails-security/GKsAFT924Ag
• https://lists.debian.org/debian-lts-announce/2018/11/msg00022.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/4089-1/
• http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00032.html
• http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html
• https://groups.google.com/forum/#%21topic/rubyonrails-security/GKsAFT924Ag
• https://lists.debian.org/debian-lts-announce/2018/11/msg00022.htmlMailing List, Third Party Advisory
• https://usn.ubuntu.com/4089-1/

Published

Nov 13, 2018

Last Modified

Jun 17, 2026

Status

Modified

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