{"id":"CVE-2026-79312","aliases":["DEBIAN-CVE-2026-79312","EUVD-2026-84489","GHSA-wpfv-47p6-jfvh","UBUNTU-CVE-2026-79312"],"status":"published","title":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads...","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","severity":{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00286,"percentile":0.21287,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-384"],"published":"2026-09-22T00:00:00Z","modified":"2026-10-17T12:57:05Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-4","1:0.62-4+deb12u1","1:0.62-5","1:0.62-6","1:0.70-1","1:0.76-1"]},{"source":"osv","ecosystem":"Debian:13","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-6","1:0.70-1","1:0.76-1"]},{"source":"osv","ecosystem":"Debian:14","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-6","1:0.70-1","1:0.76-1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.37+20120626-1","1:0.37+20120626-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.38-1","1:0.38+20170615-1","1:0.38+20170615-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.39+20181101-1","1:0.40-2","1:0.40-2ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.61-1","1:0.61-1ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:24.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-4","1:0.62-4ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-6","1:0.70-1","1:0.76-1"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"webpy","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1:0.62-6"]}],"references":[{"url":"https://github.com/webpy/webpy","tags":["report"]},{"url":"https://github.com/lichoin/TraceLoom/blob/main/CVEs/CVE-2026-79312.md","tags":["report"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-79312"},{"url":"https://github.com/advisories/GHSA-wpfv-47p6-jfvh"},{"url":"https://security-tracker.debian.org/tracker/CVE-2026-79312","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-79312","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-79312","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2026-79312","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-22T16:02:18.438Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T13:50:27.582139Z"}],"euvd":[{"id":"EUVD-2026-84489","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T00:00:00Z","modified":"2026-09-22T16:02:18Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T17:28:02.601428Z"}],"ghsa":[{"id":"GHSA-wpfv-47p6-jfvh","title":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads...","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T18:33:28Z","modified":"2026-09-22T18:33:33Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T15:12:17.909941Z"}],"nvd":[{"id":"CVE-2026-79312","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T16:17:56.63Z","modified":"2026-09-22T20:00:03.713Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-384"],"updated_at":"2026-11-02T14:12:50.368368Z"}],"osv":[{"id":"DEBIAN-CVE-2026-79312","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T16:17:56.63Z","modified":"2026-09-24T00:00:06.971079062Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:46:04.001673Z"},{"id":"UBUNTU-CVE-2026-79312","description":"webpy web.py 0.76 is vulnerable to Session Fixation. The component Session._load() reads session_id directly from the request cookie and loads that session from the store, and _save() writes back under the same session_id; no rotation after authentication, so a fixed session_id keeps the authenticated state.","status":"published","published":"2026-09-22T16:17:00Z","modified":"2026-10-17T12:57:05.363603035Z","cvss":[{"version":"3.1","score":6.8,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T16:57:18.015985Z"}]}}