CVE-2026-16729

A flaw was found in undici, where its setCookie function does not fully sanitize cookie attributes. A remote attacker could exploit this by providing specially crafted input to the domain or unparsed fields, leading to the injection of additional cookie attributes. This vulnerability can allow an...

PT-2026-59296

Impact The Response.set cookie method does not sanitize its string arguments, and in particular will not detect the presence of the r sequence in them. This can be a potential source of header injection attacks. For a header injection attack through this issue to be possible, an attacker must fir...

CVE-2026-42874 Microdot: HTTP response splitting in Response.set_cookie()

Microdot is a minimalistic Python web framework. Prior to 2.6.1, the Response.setcookie method does not sanitize its string arguments, and in particular will not detect the presence of the \r\n sequence in them. This can be a potential source of header injection attacks. For a header injection...