{"id":"CVE-2015-2296","aliases":["GHSA-pg2w-x9wp-vw92","PYSEC-2015-17"],"url":"https://o3.security/vulnerability/CVE-2015-2296","summary":"Python Requests Session Fixation","details":"The resolve_redirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect.","published":"2015-03-18T16:59:03Z","modified":"2026-10-05T10:26:49.247692278Z","cvss":null,"epss":{"score":0.03424,"percentile":0.88203,"asOf":"2026-09-10"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"requests","fixedVersion":"2.6.0"}],"fix":{"url":"https://github.com/kennethreitz/requests/commit/3bd8afbff29e50b38f889b2f688785a669b9aafc","label":"kennethreitz/requests@3bd8afb"},"references":[{"type":"ADVISORY","url":"http://advisories.mageia.org/MGASA-2015-0120.html"},{"type":"ADVISORY","url":"http://www.mandriva.com/security/advisories?name=MDVSA-2015:133"},{"type":"ADVISORY","url":"http://www.ubuntu.com/usn/USN-2531-1"},{"type":"ADVISORY","url":"https://warehouse.python.org/project/requests/2.6.0/"},{"type":"FIX","url":"https://github.com/kennethreitz/requests/commit/3bd8afbff29e50b38f889b2f688785a669b9aafc"},{"type":"WEB","url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-March/153594.html"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2015/03/14/4"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2015/03/15/1"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2015-2296"},{"type":"WEB","url":"https://github.com/psf/requests/commit/3bd8afbff29e50b38f889b2f688785a669b9aafc"},{"type":"PACKAGE","url":"https://github.com/psf/requests"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/requests/PYSEC-2015-17.yaml"},{"type":"WEB","url":"https://warehouse.python.org/project/requests/2.6.0"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-05T10:26:49.247692278Z"}}