---
id: CVE-2026-55421
title: >-
  Open edX Platform enables the authoring and delivery of online learning at any
  scale
summary: >-
  Open edX Platform enables the authoring and delivery of online learning at any
  scale. Prior to commit 00b7c3c, the endpoint accepts user-supplied
  files[].url, performs a server-side fetch using "requests.get(url,
  allow_redirects=True)". …
severity: medium
cvss: 6.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N'
cwe:
  - CWE-918
published: '2026-09-02'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:04:42.813'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-55421'
references:
  - url: >-
      https://github.com/openedx/openedx-platform/commit/00b7c3ce418b487c5696b064fc5033594b045e75
    label: security-advisories@github.com
  - url: >-
      https://github.com/openedx/openedx-platform/commit/241b914a191ec24658b9cde75a7114db40a5d53a
    label: security-advisories@github.com
  - url: >-
      https://github.com/openedx/openedx-platform/commit/c9831c2c9f53b7aa9a61d80e6d91a9941ce52ec6
    label: security-advisories@github.com
  - url: >-
      https://github.com/openedx/openedx-platform/security/advisories/GHSA-fpf9-9rpr-jvrx
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00264
epssPercentile: 0.18575
ingestedAt: '2026-09-09T21:22:45.563Z'
---

## Overview

Open edX Platform enables the authoring and delivery of online learning at any scale. Prior to commit 00b7c3c, the endpoint accepts user-supplied files[].url, performs a server-side fetch using "requests.get(url, allow_redirects=True)". The fetched bytes are then returned inside a ZIP response. This enables SSRF with response exfiltration. Redirect-following is enabled, and there is no timeout in the vulnerable fetch path. This issue has been patched via commit 00b7c3c.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.