Skip to content
Fencer Vulns
high 7.5

CVE-2019-1010083 json

Pallets Project Flask is vulnerable to Denial of Service via Unexpected memory usage

published 2019-07-17 7 y ago modified 2026-06-17 4 mo ago also GHSA-5wv5-4vpf-pj6m , PYSEC-2019-179 , EUVD-2019-0055

cvss
7.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.8%
EPSS 1.8% chance of exploitation in 30 days, percentile 79%
public exploits
0
none known

Summary

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.

Patch / fix

  • pypi flask 1.0
  • palletsprojects flask 1.0
  • flask Debian 14, Debian 13, Debian 12 1.0.2-1

debian advisories DEBIAN-CVE-2019-1010083

  • python-Flask SLE Module for Public Cloud 12 0.12.1-7.7.1
  • storm OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 1.1.3-3.3.1
  • kibana OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 4.6.3-3.3.1
  • ansible OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 2.4.6.0-3.9.1
  • grafana OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 4.6.5-4.9.1
  • ansible1 OpenStack Cloud 8, HPE Helion OpenStack 8 1.9.6-7.3.1
  • ardana-mq OpenStack Cloud 8, HPE Helion OpenStack 8 8.0+git.1589715269.62ad6df-3.22.1
  • python-amqp OpenStack Cloud Crowbar 8, OpenStack Cloud 8, HPE Helion OpenStack 8 2.4.2-3.12.1

suse advisories SUSE-SU-2023:1928-1SUSE-SU-2020:1901-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2019-1010083 updated cvss 7.5

python-flask: unexpected memory usage can lead to denial of service via crafted encoded JSON data

  • Red Hat Ceph Storage 2 python-flask
    affected: no fix planned “Out of support scope”
  • Red Hat Ceph Storage 3 python-flask
    affected: no fix available
  • Red Hat Satellite 6 python-flask, python2-flask Red Hat Storage 3 python-flask Red Hat Update Infrastructure 3 for Cloud Providers python-flask
    affected: no fix planned “Will not fix”
  • Red Hat Ceph Storage 7 python-flask Red Hat Enterprise Linux 7 python-flask Red Hat Enterprise Linux 8 python3-flask Red Hat OpenShift Container Platform 4 python-flask, python3-flask Red Hat OpenStack Platform 16 (Train) python-flask, python3-flask Red Hat Quay 3 python-flask
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.83% chance of exploitation in the next 30 days, higher than 79% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 7.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P
GitHub 3.1 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected packages

ecosystem package affected fixed in
pypi flask
<1.0
1.0

Affected products

  • The Pallets Project Flask

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption
Technology feeds

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.