---
id: CVE-2024-3772
aliases:
  - GHSA-mr82-8j83-vxmv
  - PYSEC-2026-1812
title: Pydantic regular expression denial of service
summary: Pydantic regular expression denial of service
severity: medium
cvss: 5.9
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H'
vendor: pydantic
product: pydantic
ecosystem: pip
affected:
  - 'pydantic >= 2.0.0, < 2.4.0'
  - pydantic < 1.10.13
patched:
  - pydantic 2.4.0
  - pydantic 1.10.13
published: '2024-04-15'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-mr82-8j83-vxmv'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2024-3772'
  - url: 'https://github.com/pydantic/pydantic/pull/7360'
  - url: >-
      https://github.com/pydantic/pydantic/commit/59d8f38fd6220e3917c53785dbc70317d6f8e631
  - url: >-
      https://github.com/pydantic/pydantic/commit/e4393ae6145c4dadff739990bb0116c6dec3441b
  - url: 'https://github.com/pydantic/pydantic'
  - url: >-
      https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6JBZLMSH4GAZOVBMT2JUO2LXHY7M2ALI
tags:
  - osv
  - pip
epss: 0.00957
epssPercentile: 0.59977
ingestedAt: '2026-07-08T18:25:51.427Z'
---

## Overview

Regular expression denial of service in Pydantic < 2.4.0, < 1.10.13 allows remote attackers to cause denial of service via a crafted email string.

## Affected packages

- `pydantic >= 2.0.0, < 2.4.0`
- `pydantic < 1.10.13`

## Remediation

Upgrade to a patched release:

- `pydantic 2.4.0`
- `pydantic 1.10.13`