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TI-2026-39990 Aliases CVE-2026-55421

Open edX Platform: SSRF in Studio Video Download Endpoint

Priority LOW 30CWE-918Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Information disclosure
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.

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)". 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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00459 40th percentileScored 2026-11-07
Fix Fixed openedx-platform (openedx): 00b7c3c

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
openedxopenedx-platformbefore 00b7c3c00b7c3cPatch availableCNA
  • openedx-platform Vendoropenedx Affected before 00b7c3c Fixed in 00b7c3c Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:openedx:openedx:*:*:*:*:*:*:*:*——openedx
  • cpe:2.3:a:openedx:openedx:*:*:*:*:*:*:*:* Versions — — ·openedx

Remediation

  • Fix · CNA openedx-platform (openedx) Fixed in 00b7c3c

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55421

References

Other 4

  • TI-2026-31065 Open edX Platform: Server-Side Request Forgery (SSRF) in SAML Provider Data Sync Endpoint CVSS 3.1CRITICAL 9.9
  • TI-2022-22791 Drag and Drop XBlock v2 has XSS Issues in Xblock Input Fields CVSS 3.1HIGH 8.4
  • TI-2026-31067 Open edx Enterprise Service: SSRF via SAML metadata URL in sync_provider_data endpoint CVSS 3.1HIGH 8.5
  • TI-2026-38679 Open edX Platform: Insufficient Permission on set_course_mode_price() CVSS 3.1HIGH 7.6
  • TI-2026-26980 Open edX Platform: Account Activation Bypass via activation_key Exposure in REST API CVSS 3.1MEDIUM 5.3
  • TI-2026-27540 Open edX Platform has an Open Redirect in Survey Views via Unvalidated redirect_url Parameter CVSS 3.1MEDIUM 6.1
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences