{"cve":"CVE-2019-12760","nvd":{"published":"2019-06-06T19:29:00.500","modified":"2026-06-17T02:15:23.807","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","score":3.3},"cwes":["CWE-502"],"references":["https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7","https://github.com/davidhalter/parso/issues/75","https://gist.github.com/dhondta/f71ae7e5c4234f8edfd2f12503a5dcc7","https://github.com/davidhalter/parso/issues/75"],"products":["parso_project:parso"],"source":"nvd","synced_at":"2026-10-19T20:57:00.690689396+00:00"},"epss":{"cve":"CVE-2019-12760","score":0.01534,"percentile":0.74826,"date":"2026-11-01"},"kev":null,"osv":[{"id":"PYSEC-2019-109","url":"https://osv.dev/vulnerability/PYSEC-2019-109","summary":"","modified":"2023-11-08T04:01:06.251068Z","packages":[{"ecosystem":"PyPI","name":"parso","purl":"pkg:pypi/parso","ranges":["<0.5.0"],"fixed":["0.5.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}