Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2023-25577

25
FAUCET Score

CVE-2023-25577 is a denial-of-service vulnerability affecting Werkzeug, a Python WSGI web application library, specifically versions prior to 2.2.3. The vulnerability allows an unauthenticated attacker to exhaust system resources by sending crafted multipart form data, leading to high CPU usage, excessive memory consumption, and potential process termination. Rated with a CVSS score of 7.5 (High), this vulnerability has a low attack complexity and can result in a complete loss of availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.2.3CPE matchmatch criteria
cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

CVSS:3.1/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
3.1

Exploit Intelligence

EPSS Score
1.42%
Probability of exploitation in next 30 days
EPSS Percentile
70.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0142 is in the 51st percentile among its peer group of 51,506 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 (23)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: cbl2 python-werkzeug 2.0.3-2 on CBL Mariner 2.0Fixed in: 2.0.3-2
microsoftpatch availablevia msrc
Product: 18406-16823Fixed in: 2.0.3-2
pippatch availablevia ghsa
Product: WerkzeugFixed in: 2.2.3
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 7.1Fixed in: ceph-2:18.2.1-329.el8cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 7.1Fixed in: oath-toolkit-0:2.6.12-1.el9cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 8.1Fixed in: ceph-2:19.2.1-222.el9cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 8.1Fixed in: cephadm-ansible-1:4.1.4-1.el9cp
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.13Fixed in: python-werkzeug-0:1.0.1-3.el8ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenShift Container Platform 4.14Fixed in: python-werkzeug-0:2.2.3-2.el9
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 13.0 Octavia - ELSFixed in: python-werkzeug-0:0.14.1-3.1.el7ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 16.1Fixed in: python-werkzeug-0:0.14.1-12.el8ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: python-werkzeug-0:0.14.1-12.el8ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 17.0Fixed in: python-werkzeug-0:2.0.1-5.el9ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Quay 3Fixed in: quay/quay-rhel8:v3.10.0-150
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ceph Storage 8.1Fixed in: oath-toolkit-0:2.6.12-1.el9cp
View patch
redhatpatch availablevia redhat_api
Product: Ironic content for Red Hat OpenShift Container Platform 4.11Fixed in: python-werkzeug-0:2.0.3-5.el8
View patch
redhatpatch availablevia redhat_api
Product: Ironic content for Red Hat OpenShift Container Platform 4.12Fixed in: python-werkzeug-0:2.0.3-4.el9
View patch
redhatpatch availablevia redhat_api
Product: Ironic content for Red Hat OpenShift Container Platform 4.13Fixed in: python-werkzeug-0:2.0.3-4.el9
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: python-werkzeug
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: python-werkzeug
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: openstack-designate
redhatno patchvia redhat_api
Product: Red Hat Storage 3Fixed in: python-werkzeug

Vendor Advisories (3)

pipGHSA-xg9f-g7g7-2323high

High resource usage when parsing multipart form data with many fields

Feb 15, 2023
microsoft2023-Feb/CVE-2023-25577Important

Werkzeug may allow high resource usage when parsing multipart form data with many fields

Feb 14, 2023
redhatCVE-2023-25577Important

python-werkzeug: high resource usage when parsing multipart form data with many fields

Feb 14, 2023

References

github.com / pallets/werkzeug/commit/517cac5a804e8c4dc4ed038bb20dacd038e7a9f1
Patch
github.com / pallets/werkzeug/releases/tag/2.2.3
Release Notes
github.com / pallets/werkzeug/security/advisories/GHSA-xg9f-g7g7-2323
Vendor Advisory
security.netapp.com / advisory/ntap-20230818-0003
debian.org / security/2023/dsa-5470