In Public Knowledge Project (PKP) OJS, OMP, and OPS before 3.3.0.21 and 3.4.x before 3.4.0.8, an XXE attack by the Journal Editor Role can create a new role as super admin in the journal context, and insert a backdoor plugin, by uploading a crafted XML document as a User XML Plugin.

A vulnerability was found in pkp ojs up to 3.4.0-6 and classified as problematic. Affected by this issue is some unknown functionality of the file /login/signOut. The manipulation of the argument source with the input .example.com leads to open redirect. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.

Cross-site request forgery (CSRF) vulnerability in index/manager/fileUpload in Public Knowledge Project Open Journal Systems 2.3.6 and earlier allows remote attackers to hijack the authentication of administrators for requests that upload PHP files.

Cross-site request forgery (CSRF) vulnerability in index/manager/fileUpload in Public Knowledge Project Open Harvester Systems 2.3.1 and earlier allows remote attackers to hijack the authentication of administrators for requests that upload PHP files.

Cross-site scripting (XSS) via Host Header injection in PKP Open Journals System 2.4.8 >= 3.3 allows remote attackers to inject arbitary code via the X-Forwarded-Host Header.

PKP Vendor Open Journal System v2.4.8 to v3.3.8 allows attackers to perform reflected cross-site scripting (XSS) attacks via crafted HTTP headers.