CVE-2021-42078

PHP Event Calendar Lite Edition Cross Site Scripting

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

PHP Event Calendar versiones hasta el 04-11-2021 permite un ataque de tipo cross-site scripting (XSS) persistente, como es demostrado por el parámetro de título /server/ajax/events_manager.php. Esto puede ser explotado por un adversario de múltiples maneras, por ejemplo, para llevar a cabo acciones en la página en el contexto de otros usuarios, o para desfigurar el sitio

PHP Event Calendar Lite Edition suffers from a persistent cross site scripting vulnerability.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-10-07 CVE Reserved
2021-11-05 CVE Published
2024-07-24 EPSS Updated
2024-08-04 CVE Updated
2024-08-04 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (2)

URL	Tag	Source

URL	Date	SRC
http://seclists.org/fulldisclosure/2021/Nov/24	2024-08-04
https://www.syss.de/fileadmin/dokumente/Publikationen/Advisories/SYSS-2021-049.txt	2024-08-04

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Php Event Calendar Project Search vendor "Php Event Calendar Project"		Php Event Calendar Search vendor "Php Event Calendar Project" for product "Php Event Calendar"				2021-11-04 Search vendor "Php Event Calendar Project" for product "Php Event Calendar" and version "2021-11-04"		lite		Affected