What’s Vulnerable › Vulnerabilities

CVE-2026-55421: Open edX Platform: SSRF in Studio Video Download Endpoint

• Severity: medium (CVSS 6.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-02 · updated 2026-09-09
• Weakness: CWE-918

Description

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.

Affected products

• openedx-platform: before 00b7c3ce418b487c5696b064fc5033594b045e75

References

• https://github.com/openedx/openedx-platform/commit/00b7c3ce418b487c5696b064fc5033594b045e75
• https://github.com/openedx/openedx-platform/commit/241b914a191ec24658b9cde75a7114db40a5d53a
• https://github.com/openedx/openedx-platform/commit/c9831c2c9f53b7aa9a61d80e6d91a9941ce52ec6
• https://github.com/openedx/openedx-platform/security/advisories/GHSA-fpf9-9rpr-jvrx

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