{"id":"AZL-90656","summary":"CVE-2026-50269 affecting package python-aiohttp 3.6.2-3","details":"AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerability is fixed in 3.14.0.","modified":"2026-08-29T05:25:22Z","published":"2026-06-22T18:16:42Z","upstream":["CVE-2026-50269"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50269"}],"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-90656.json"}}],"schema_version":"1.9.0"}