{"id":"CVE-2019-12760","aliases":["DEBIAN-CVE-2019-12760","EUVD-2019-0101","GHSA-22mf-97vh-x8rw","PYSEC-2019-109","UBUNTU-CVE-2019-12760"],"status":"disputed","title":"Deserialization vulnerability exists in parso","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01534,"percentile":0.75004,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-502"],"published":"2019-06-06T18:55:03Z","modified":"2026-10-20T10:52:40Z","fixes":[{"ecosystem":"Debian:12","package":"parso","fixed_in":["0.5.1-0.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"parso","fixed_in":["0.5.1-0.1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"parso","fixed_in":["0.5.1-0.1"],"sources":["osv"]},{"ecosystem":"PyPI","package":"parso","fixed_in":["0.5.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"parso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.1-0.1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"parso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.1-0.1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"parso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.1-0.1"}]}]},{"source":"osv","ecosystem":"PyPI","package":"parso","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.5.0"}]}],"versions":["0.0.1","0.0.2","0.0.3","0.0.4","0.1.0","0.1.1","0.2.0","0.2.1","0.3.0","0.3.1","0.3.2","0.3.3","0.3.4","0.4.0"]}],"products":[{"vendor":"parso_project","product":"parso"}],"references":[{"url":"https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web","report"]},{"url":"https://github.com/davidhalter/parso/issues/75","tags":["x_refsource_MISC","x_transferred","report","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-12760","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-22mf-97vh-x8rw","tags":["advisory"]},{"url":"https://github.com/pypa/advisory-database/tree/main/vulns/parso/PYSEC-2019-109.yaml","tags":["web"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2019-12760","tags":["advisory"]},{"url":"https://github.com/davidhalter/parso","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2019-12760","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2019-12760","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2019-12760","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","status":"disputed","published":"2019-06-06T18:55:03Z","modified":"2024-08-04T23:32:54.763Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"adp"}],"updated_at":"2026-11-02T14:20:23.697579Z"}],"euvd":[{"id":"EUVD-2019-0101","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","status":"published","published":"2019-06-06T18:55:03Z","modified":"2024-08-04T23:32:54Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T02:40:45.434408Z"}],"ghsa":[{"id":"GHSA-22mf-97vh-x8rw","title":"Deserialization vulnerability exists in parso","description":"** DISPUTED ** A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution.  NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.\"","status":"withdrawn","published":"2019-06-13T16:12:57Z","modified":"2024-10-09T20:52:03Z","cvss":[{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"high"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:38:09.785133Z"}],"nvd":[{"id":"CVE-2019-12760","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","status":"disputed","published":"2019-06-06T19:29:00.5Z","modified":"2026-06-17T02:15:23.807Z","cvss":[{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6,"vector":"AV:N/AC:M/Au:S/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T14:05:16.285679Z"}],"osv":[{"id":"CVE-2019-12760","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","status":"published","published":"2019-06-06T19:29:00.5Z","modified":"2026-10-20T10:52:40.196058395Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:44:10.718934Z"},{"id":"DEBIAN-CVE-2019-12760","description":"A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.","status":"published","published":"2019-06-06T19:29:00.5Z","modified":"2026-09-21T07:01:49.434578522Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:31.467893Z"},{"id":"GHSA-22mf-97vh-x8rw","title":"Deserialization vulnerability exists in parso","description":"** DISPUTED ** A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution.  NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.\"","status":"withdrawn","published":"2019-06-13T16:12:57Z","modified":"2024-10-09T21:09:52.332156Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"4.0","score":7.2,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-02T15:46:33.520522Z"},{"id":"UBUNTU-CVE-2019-12760","description":"** DISPUTED ** A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.\"","status":"withdrawn","published":"2019-06-06T19:29:00Z","modified":"2025-07-16T07:39:25.707759Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"},{"version":"3.1","score":3.3,"vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-02T15:54:19.202697Z"},{"id":"PYSEC-2019-109","description":"** DISPUTED ** A deserialization vulnerability exists in the way parso through 0.4.0 handles grammar parsing from the cache. Cache loading relies on pickle and, provided that an evil pickle can be written to a cache grammar file and that its parsing can be triggered, this flaw leads to Arbitrary Code Execution. NOTE: This is disputed because \"the cache directory is not under control of the attacker in any common configuration.\"","status":"published","published":"2019-06-06T19:29:00Z","modified":"2023-11-08T04:01:06.251068Z","updated_at":"2026-11-02T15:52:52.192131Z"}]}}