CVE-2021-42078 Information

Description

PHP Event Calendar through 2021-11-04 allows persistent cross-site scripting (XSS) as demonstrated by the /server/ajax/events_manager.php title parameter. This can be exploited by an adversary in multiple ways e.g. to perform actions on the page in the context of other users or to deface the site.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-049.txt http://seclists.org/fulldisclosure/2021/Nov/24

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1