[IntelliJ] Uncaught Exception Error retrieving vulnerability data from GitHub Security Advisory API java.net.ConnectException: Network is unreachable: getsockopt

IntelliJ build version: 2025.3.2 IU-253.30387.90
OS: Windows 11
JDK: JetBrains s.r.o. 21.0.9
Plugin version: 3.97.0-2025.3
Additional Info: None
Parent component:

com.intellij.openapi.wm.impl.IdeRootPane[,8,0,2554x1394,layout=com.intellij.openapi.wm.impl.IdeRootPane$CustomHeaderRootLayout,alignmentX=0.0,alignmentY=0.0,border=,flags=449,maximumSize=,minimumSize=,preferredSize=]

Error message:

IdeaLoggingEvent[message=Error retrieving vulnerability data from GitHub Security Advisory API, throwable=java.net.ConnectException: Network is unreachable: getsockopt
	at <REDACTED: user-file-path>(HttpClientImpl.java:955)
	at com.microsoft.azure.toolkit.intellij.appmod.javaupgrade.service.CVECheckService.retrieveVulnerabilityData(CVECheckService.java:312)
	at com.microsoft.azure.toolkit.intellij.appmod.javaupgrade.service.CVECheckService.fetchCves(CVECheckService.java:241)
	at com.microsoft.azure.toolkit.intellij.appmod.javaupgrade.service.CVECheckService.getCveUpgradeIssues(CVECheckService.java:200)
	at com.microsoft.azure.toolkit.intellij.appmod.javaupgrade.service.CVECheckService.batchGetCVEIssues(CVECheckService.java:171)
	at com.microsoft.azure.toolkit.intellij.appmod.javaupgrade.service.JavaUpgradeIssuesDetectionService.getCVEIssues(JavaUpgradeIssuesDet

Start with CVECheckService.java at retrieveVulnerabilityData (line 312) and the fetchCves and getCveUpgradeIssues callers shown in the stack trace. Determine how a network-unreachable failure from the GitHub Security Advisory API should be handled, then verify that vulnerability retrieval no longer produces an uncaught exception.