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TI-2026-58563 Aliases CVE-2026-85271

Cross-site scripting in openedx-platform

Priority LOW 27CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

Open edX Platform enables the authoring and delivery of online learning at any scale. From Redwood until Ulmo and Verawood.1, the add_additional_attributes_to_notifications function in openedx/core/djangoapps/notifications/email/utils.py assigns notification content without sanitizing discussion-title values produced by get_notification_content in openedx/core/djangoapps/notifications/base_notification.py. An enrolled student can place CSS-capable markup in the post_title value supplied by lms/djangoapps/discussion/rest_api/discussions_notifications.py. Digest and batched-email rendering then passes that value through openedx/core/djangoapps/notifications/templates/notifications/digest_content.html as safe HTML, allowing email-open tracking and content spoofing or phishing when another learner opens a CSS-rendering client. The immediate-email path is not affected because it strips title markup and renders a separately sanitized body. This issue is fixed in Ulmo and Verawood.1.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00354 29th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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-platform>= release/redwood.1, < release/ulmo.4—No fix listedCNA
  • openedx-platform Vendoropenedx Affected >= release/redwood.1, < release/ulmo.4 Fixed in — No fix listed 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

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-85271

References

Other 6

  • 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