{"id":"AZL-91362","summary":"CVE-2026-44889 affecting package python-webob for versions less than 1.8.10-1","details":"WebOb provides objects for HTTP requests and responses. Prior to 1.8.10, the normalization of the HTTP Location header during a redirect is vulnerable to an open redirect: WebOb joins the redirect target to the request URI using Python's urljoin, and since Python 3.10 the underlying urlsplit strips ASCII tab, carriage return, and newline characters before parsing, so a redirect target containing such characters can be reinterpreted as a protocol-relative URL whose authority is an attacker-controlled host. This bypasses the CVE-2024-42353 fix that escaped a leading double slash, allowing an attacker who influences the redirect location to send users to an arbitrary external site instead of the intended one. This vulnerability is fixed in 1.8.10.","modified":"2026-08-28T17:47:39.047605458Z","published":"2026-06-22T22:16:46Z","upstream":["CVE-2026-44889"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-44889"}],"affected":[{"package":{"name":"python-webob","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/python-webob"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.8.10-1"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-91362.json"}}],"schema_version":"1.9.0"}