The provided vulnerability information describes a header injection issue in Plone due to improper input validation when handling cookie values. However, none of the sources (CVE, GHSA, NVD, Plone security advisories, or Red Hat Bugzilla) include concrete code examples, commit diffs, or patch details that explicitly identify specific vulnerable functions. While the vulnerability likely exists in cookie processing and HTTP response header construction logic, the absence of technical implementation details in available public documentation makes it impossible to pinpoint exact function names/file paths with high confidence. This analysis is limited to the information provided, which focuses on vulnerability descriptions rather than code-level specifics.