{"id":"CVE-2018-1000519","aliases":["EUVD-2018-0002","GHSA-fpwp-69xv-c67f","PYSEC-2018-80"],"status":"published","title":"aiohttp-session Session Fixation vulnerability","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01157,"percentile":0.67291,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-384"],"published":"2018-06-26T16:00:00Z","modified":"2026-10-20T10:49:40Z","fixes":[{"ecosystem":"PyPI","package":"aiohttp-session","fixed_in":["2.4.0"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"PyPI","package":"aiohttp-session","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0"}]}]},{"source":"osv","ecosystem":"PyPI","package":"aiohttp-session","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0"}]}],"versions":["0.0.1","0.1.0","0.1.1","0.1.2","0.2.0","0.3.0","0.4.0","0.5.0","0.7.0","0.7.1","0.8.0","1.0.0","1.0.1","1.1.0","1.2.0","1.2.1","2.0.0","2.0.1","2.1.0","2.2.0","2.3.0"]},{"source":"osv","ecosystem":"PyPI","package":"aiohttp-session","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.4.0"}]}],"versions":["0.0.1","0.1.0","0.1.1","0.1.2","0.2.0","0.3.0","0.4.0","0.5.0","0.7.0","0.7.1","0.8.0","1.0.0","1.0.1","1.1.0","1.2.0","1.2.1","2.0.0","2.0.1","2.1.0","2.2.0","2.3.0"]}],"products":[{"vendor":"aio-libs","product":"aiohttp_session"}],"references":[{"url":"https://github.com/aio-libs/aiohttp-session/issues/272","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L60","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-1000519","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-fpwp-69xv-c67f","tags":["advisory"]},{"url":"https://github.com/aio-libs/aiohttp-session/commit/6b7864004d3442dbcfaf8687f63262c1c629f569","tags":["web"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/aiohttp-session/PYSEC-2018-80.yaml","tags":["web"]},{"url":"https://github.com/aio-libs/aiohttp-session","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-1000519","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-06-26T16:00:00Z","modified":"2024-08-05T12:40:47.085Z","updated_at":"2026-11-02T14:35:10.685174Z"}],"euvd":[{"id":"EUVD-2018-0002","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-06-26T16:00:00Z","modified":"2024-08-05T12:40:47Z","updated_at":"2026-11-03T02:39:26.268404Z"}],"ghsa":[{"id":"GHSA-fpwp-69xv-c67f","title":"aiohttp-session Session Fixation vulnerability","description":"The pypi package aiohttp-session before 2.4.0 contained a Session Fixation vulnerability in `load_session` function for RedisStorage that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (`?session=\u003c\u003e`, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-09-13T15:46:40Z","modified":"2025-07-11T23:17:40Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"},{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:38:49.837727Z"}],"nvd":[{"id":"CVE-2018-1000519","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-06-26T16:29:01.307Z","modified":"2026-06-17T01:32:49.8Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:04:30.900603Z"}],"osv":[{"id":"CVE-2018-1000519","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-06-26T16:29:01.307Z","modified":"2026-10-20T10:49:40.018368415Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:07.192756Z"},{"id":"GHSA-fpwp-69xv-c67f","title":"aiohttp-session Session Fixation vulnerability","description":"The pypi package aiohttp-session before 2.4.0 contained a Session Fixation vulnerability in `load_session` function for RedisStorage that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (`?session=\u003c\u003e`, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-09-13T15:46:40Z","modified":"2025-07-11T23:32:28.429947Z","cvss":[{"version":"3.0","score":6.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N","level":"medium"},{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T15:46:46.760785Z"},{"id":"PYSEC-2018-80","description":"aio-libs aiohttp-session contains a Session Fixation vulnerability in load_session function for RedisStorage (see: https://github.com/aio-libs/aiohttp-session/blob/master/aiohttp_session/redis_storage.py#L42) that can result in Session Hijacking. This attack appear to be exploitable via Any method that allows setting session cookies (?session=\u003c\u003e, or meta tags or script tags with Set-Cookie).","status":"published","published":"2018-06-26T16:29:00Z","modified":"2023-11-08T03:59:38.712396Z","updated_at":"2026-11-02T15:52:52.192131Z"}]}}