---
id: CVE-2020-13258
aliases:
  - GHSA-g5j6-r3x9-gf2m
  - PYSEC-2026-626
title: Cross-site scripting in Contentful
summary: Cross-site scripting in Contentful
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
vendor: contentful
product: contentful
ecosystem: pip
affected:
  - contentful < 1.12.4
patched:
  - contentful 1.12.4
published: '2021-06-18'
updated: '2026-07-06'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-g5j6-r3x9-gf2m'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2020-13258'
  - url: 'https://github.com/contentful/the-example-app.py/issues/44'
tags:
  - osv
  - pip
  - exploit-available
epss: 0.02063
epssPercentile: 0.80524
ingestedAt: '2026-07-08T18:25:49.231Z'
exploits:
  nuclei:
    - CVE-2020-13258
  checkedAt: '2026-09-25T08:20:37.734Z'
exploitAvailable: true
---

## Overview

Contentful through 2020-05-21 for Python allows reflected XSS, as demonstrated by the api parameter to the-example-app.py.

## Affected packages

- `contentful < 1.12.4`

## Remediation

Upgrade to a patched release:

- `contentful 1.12.4`