{"cve":"CVE-2019-1010083","nvd":{"published":"2019-07-17T14:15:11.570","modified":"2026-06-17T02:09:46.147","status":"Modified","description":"The Pallets Project Flask before 1.0 is affected by: unexpected memory usage. The impact is: denial of service. The attack vector is: crafted encoded JSON data. The fixed version is: 1. NOTE: this may overlap CVE-2018-1000656.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":[],"references":["https://www.palletsprojects.com/blog/flask-1-0-released/","https://www.palletsprojects.com/blog/flask-1-0-released/"],"products":["palletsprojects:flask"],"source":"nvd","synced_at":"2026-10-19T20:58:11.797917892+00:00"},"epss":{"cve":"CVE-2019-1010083","score":0.01832,"percentile":0.78901,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-5wv5-4vpf-pj6m","url":"https://osv.dev/vulnerability/GHSA-5wv5-4vpf-pj6m","summary":"Pallets Project Flask is vulnerable to Denial of Service via Unexpected memory usage","modified":"2024-09-20T21:24:25.140560Z","packages":[{"ecosystem":"PyPI","name":"flask","purl":"pkg:pypi/flask","ranges":["<1.0"],"fixed":["1.0"]}]},{"id":"PYSEC-2019-179","url":"https://osv.dev/vulnerability/PYSEC-2019-179","summary":"","modified":"2023-11-08T04:00:40.602062Z","packages":[{"ecosystem":"PyPI","name":"flask","purl":"pkg:pypi/flask","ranges":["<1.0"],"fixed":["1.0"]}]}],"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."]}