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Vulnerability record · CVE-2019-1010083 · published 17 July 2019

CVE-2019-1010083: Palletsprojects flask vulnerability

PPalletsprojects · Flask

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.

7.5 CVSS 3.0 High EPSS 1.9% · top 21.3%
7.5CVSS 3.0 base score, v2 5.0
1.9%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.palletsprojects.com/blog/flask-1-0-released/ Release NotesVendor Advisory
https://www.palletsprojects.com/blog/flask-1-0-released/ Release NotesVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.5CVE-2023-30861Palletsprojects flask vulnerabilityFlask is a lightweight WSGI web application framework. When all of the following conditions are met, a response containing data intended for one clie…EPSS 1.3%7.5CVE-2018-1000656Palletsprojects flask improper input validation vulnerabilityThe Pallets Project flask version Before 0.12.3 contains a CWE-20: Improper Input Validation vulnerability in flask that can result in Large amount o…EPSS 3.9%2.3CVE-2026-27205Palletsprojects flask vulnerabilityFlask is a web server gateway interface (WSGI) web application framework. In versions 3.1.2 and below, when the session object is accessed, Flask sho…EPSS 0.42%

Source: NIST National Vulnerability Database (record CVE-2019-1010083), CISA KEV, FIRST EPSS (scores of 2026-09-30). This page is refreshed as NVD updates the record.