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ZPublisher.HTTPRequest._scrubHeader in Zope 2 before 2.13.19, as used in Plone before 4.3 beta 1, allows remote attackers to inject arbitrary HTTP headers via a linefeed (LF) character.
Use Plone vendor hub and Plone product page to widen CVE-2012-5486 into its surrounding weakness, vendor, and product context.
Compare it with CVE-2021-33509, CVE-2021-33926 and CVE-2024-22889 for nearby disclosures in the same product family.