Vulnerability · Published Apr 6, 2025 · Assigned by GitHub_M

CVE-2025-31488Plain Craft Launcher's custom homepage can use Internet Explorer to load web pages with the help of controls such as WebBrowser

Medium 4.9

In plain English

A medium-severity improper input validation in PCL2 from Hex-Dragon. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).

Severity (CVSS 4.0)4.9Medium

Exploit odds (30 days)0.2%top 91.9% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Plain Craft Launcher (PCL) is a launcher for Minecraft. PCL allows users to use homepages provided by third parties. If controls such as WebBrowser are used in the homepage, WPF will use Internet Explorer to load the specified webpage. If the user uses a malicious homepage, the attacker can use IE background to access the specified webpage without knowing it. This vulnerability is fixed in 2.9.3.

Affected products (as reported)

Vendor	Product	Versions
Hex-Dragon	PCL2	< 2.9.3

Weakness: CWE-20 · Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H

References

https://github.com/Hex-Dragon/PCL2/security/advisories/GHSA-wfpw-hfcp-9m73 x_refsource_CONFIRM