CVE-2023-36053

HIGH
7.5
CVSS Score
Published: July 3, 2023 at 12:00 AM UTC
Updated: June 17, 2026 at 06:05 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraDjango

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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit

Description

In Django 3.2 before 3.2.20, 4 before 4.1.10, and 4.2 before 4.2.3, EmailValidator and URLValidator are subject to a potential ReDoS (regular expression denial of service) attack via a very large number of domain name labels of emails and URLs.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

3.2 ≤ v < 3.2.204.0 ≤ v < 4.1.104.2 ≤ v < 4.2.3
Affected range stops below 3.2.20, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.1.10, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.2.3, so it looks safe — our inference, not a vendor statement

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHCISA-ADP
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-1333

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