CVE-2021-42078 — MEDIUM (6.1)

Vulnerability 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 Score

6.1

MEDIUM

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality

LOW

Integrity

LOW

Availability

NONE

Affected Products

Vendor	Product	Versions
Php Event Calendar Project	Php Event Calendar	2021-11-04

Related Weaknesses (CWE)

CWE-79

References

http://seclists.org/fulldisclosure/2021/Nov/24ExploitMailing ListThird Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-049.tExploitThird Party Advisory
http://seclists.org/fulldisclosure/2021/Nov/24ExploitMailing ListThird Party Advisory
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-049.tExploitThird Party Advisory

FAQ

What is CVE-2021-42078?

CVE-2021-42078 is a vulnerability with a CVSS score of 6.1 (MEDIUM). 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 mul...

How severe is CVE-2021-42078?

CVE-2021-42078 has been rated MEDIUM with a CVSS base score of 6.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-42078?

Check the references section above for vendor advisories and patch information. Affected products include: Php Event Calendar Project Php Event Calendar.