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CVE-2019-1010083

23
FAUCET Score

CVE-2019-1010083 describes a denial-of-service vulnerability affecting Pallets Project Flask versions prior to 1.0. This flaw allows an unauthenticated attacker to cause unexpected memory usage and system instability by sending specially crafted encoded JSON data. With a CVSS score of 7.5 (High), the vulnerability is easily exploitable over the network with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.0CPE matchmatch criteria
cpe:2.3:a:palletsprojects:flask:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.88%
Probability of exploitation in next 30 days
EPSS Percentile
77.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0188 is in the 61st percentile among its peer group of 51,485 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

pippatch availablevia ghsa
Product: flaskFixed in: 1.0
redhatno patchvia redhat_api
Product: Red Hat Ceph Storage 3Fixed in: python-flask
redhatend of lifevia redhat_api
Product: Red Hat Satellite 6Fixed in: python-flask
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: python-flask
redhatend of lifevia redhat_api
Product: Red Hat Update Infrastructure 3 for Cloud ProvidersFixed in: python-flask

Vendor Advisories (2)

pipGHSA-5wv5-4vpf-pj6mhigh

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

Jul 19, 2019
redhatCVE-2019-1010083Moderate

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

Apr 26, 2018

References

palletsprojects.com / blog/flask-1-0-released
Release NotesVendor Advisory