Vulnerability · Published Nov 8, 2021 · Assigned by mitre

CVE-2021-42078

Medium 6.1

In plain English

A medium-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities).

Severity (CVSS NVD)6.1Medium

Exploit odds (30 days)0.9%top 40.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

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