A cross-site scripting (XSS) vulnerability in the Production module of Pkp Ojs v3.3 allows attackers to execute arbitrary web scripts or HTML via a crafted payload injected into the Input subject field under the Add Discussion function.
PKP-WAL (aka PKP Web Application Library or pkp-lib) before 3.3.0-16, as used in Open Journal Systems (OJS) and other products, does not verify that the file named in an XML document (used for the native import/export plugin) is an image file, before trying to use it for an issue cover image.