Medium severity · published Sep 2, 2026
CVE-2026-55421
Open edX Platform: SSRF in Studio Video Download Endpoint
6.8
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 40% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
openedx-platform · openedx
< 00b7c3ce418b487c5696b064fc5033594b045e75 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55421
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55421
github.com
https://github.com/openedx/openedx-platform/commit/00b7c3ce418b487c5696b064fc5033594b045e75
github.com
https://github.com/openedx/openedx-platform/commit/241b914a191ec24658b9cde75a7114db40a5d53a
github.com
https://github.com/openedx/openedx-platform/commit/c9831c2c9f53b7aa9a61d80e6d91a9941ce52ec6
github.com
https://github.com/openedx/openedx-platform/security/advisories/GHSA-fpf9-9rpr-jvrx
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