{"id":"AZL-81779","summary":"CVE-2026-34520 affecting package python-aiohttp 3.6.2-3","details":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, the C parser (the default for most installs) accepted null bytes and control characters in response headers. This issue has been patched in version 3.13.4.","modified":"2026-08-29T05:25:22Z","published":"2026-04-01T21:17:00Z","upstream":["CVE-2026-34520"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-34520"}],"affected":[{"package":{"name":"python-aiohttp","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python-aiohttp"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.6.2-3"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-81779.json"}}],"schema_version":"1.9.0"}