PYSEC-2026-1439 H2O Vulnerable to Denial of Service (DoS) via Large GZIP Parsing

In h2oai/h2o-3 version 3.46.0.2, a vulnerability exists where uploading and repeatedly parsing a large GZIP file can cause a denial of service. The server becomes unresponsive due to memory exhaustion and a large number of concurrent slow-running jobs. This issue arises from the improper handling...

CVE-2025-69874

nanotar through 0.2.0 has a path traversal vulnerability in parseTar and parseTarGzip that allows remote attackers to write arbitrary files outside the intended extraction directory via a crafted tar archive containing path traversal sequence...

okio: GzipSource class improper exception handling

A flaw was found in SquareUp Okio. A class GzipSource does not handle an exception that might be raised when parsing a malformed gzip buffer. This issue may allow a malicious user to start processing a malformed file, which can result in a Denial of Service DoS...