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CVE-2023-36053

24
FAUCET Score

CVE-2023-36053 is a Regular Expression Denial of Service (ReDoS) vulnerability affecting Django versions 3.2.x, 4.0.x, and 4.1.x. Specifically, the EmailValidator and URLValidator components are susceptible to attack when processing an excessive number of domain name labels in email addresses or URLs. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity that can lead to high availability impact. Currently, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.2, < 3.2.20CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
>= 4.0, < 4.1.10CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
>= 4.2, < 4.2.3CPE matchmatch criteria
cpe:2.3:a:djangoproject:django:*:*:*:*:*:*:*:*
10.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
11.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

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
2.98%
Probability of exploitation in next 30 days
EPSS Percentile
85.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0298 is in the 75th percentile among its peer group of 51,553 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 (26)

pippatch availablevia ghsa
Product: DjangoFixed in: 4.1.10
pippatch availablevia ghsa
Product: DjangoFixed in: 3.2.20
pippatch availablevia ghsa
Product: DjangoFixed in: 4.2.3
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Automation Platform 2.4 for RHEL 8Fixed in: automation-controller-0:4.4.2-1.el8ap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Automation Platform 2.4 for RHEL 8Fixed in: python3x-django-0:3.2.20-1.el8ap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Automation Platform 2.4 for RHEL 9Fixed in: automation-controller-0:4.4.2-1.el9ap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Ansible Automation Platform 2.4 for RHEL 9Fixed in: python-django-0:3.2.20-1.el9ap
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 17.1 for RHEL 9Fixed in: python-django-0:2.2.24-5.el9ost
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.13 for RHEL 8Fixed in: python-django-0:3.2.21-1.el8pc
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Satellite 6.14 for RHEL 8Fixed in: python-django-0:3.2.21-1.el8pc
View patch
redhatpatch availablevia redhat_api
Product: RHUI 4 for RHEL 8Fixed in: python-django-0:4.2.11-1.el8ui
View patch
redhatno patchvia redhat_api
Product: Red Hat Update Infrastructure 4 for Cloud ProvidersFixed in: python3-django
redhatno patchvia redhat_api
Product: Red Hat Ansible Automation Platform 2Fixed in: python3-django
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 17.0Fixed in: python3-django
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 17.1Fixed in: python3-django
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: python3-django
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 18.0Fixed in: python-django
redhatno patchvia redhat_api
Product: Red Hat Update Infrastructure 4 for Cloud ProvidersFixed in: python38-django
redhatno patchvia redhat_api
Product: Red Hat Update Infrastructure 4 for Cloud ProvidersFixed in: python39-django
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: python-django
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.1Fixed in: python3-django20
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.1Fixed in: python-django20
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: python3-django20
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 16.2Fixed in: python-django20
redhatend of lifevia redhat_api
Product: Red Hat Ceph Storage 3Fixed in: python-django
redhatend of lifevia redhat_api
Product: Red Hat Storage 3Fixed in: python2-django

Vendor Advisories (2)

pipGHSA-jh3w-4vvf-mjgrhigh

Django has regular expression denial of service vulnerability in EmailValidator/URLValidator

Jul 3, 2023
redhatCVE-2023-36053Moderate

python-django: Potential regular expression denial of service vulnerability in EmailValidator/URLValidator

Jul 3, 2023

References

lists.fedoraproject.org / archives/list/[email protected]/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D
docs.djangoproject.com / en/4.2/releases/security
Release Notes
groups.google.com / forum
Permissions Required
lists.debian.org / debian-lts-announce/2023/07/msg00022.html
Mailing List
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/NRDGTUN4LTI6HG4TWR3JYLSFVXPZT42A
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/XG5DYKPNDCEHJQ3TKPJQO7QGSR4FAYMS
Mailing ListThird Party Advisory
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/ZQJOMNRMVPCN5WMIZ7YSX5LQ7IR2NY4D
debian.org / security/2023/dsa-5465
Third Party Advisory
djangoproject.com / weblog/2023/jul/03/security-releases
PatchVendor Advisory