CVE-2026-53635Public exploitNetwork attack vectorHinoki check available

Course-price tampering via missing authorization check

Published Sep 2, 2026 · Updated Sep 2, 2026

Missing authorization in Open edX Platform before ulmo allows remote authenticated users to overwrite any course's honor price and currency. The set_course_mode_price view accepts a URL-supplied course ID and updates its CourseMode row after checking only that the requester is logged in. A learner session and public course ID suffice; unauthorized changes affect catalog pricing and can propagate into ecommerce checkout and invoices.

CVSS severity7.6
High
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Missing authorization in Open edX Platform before ulmo allows remote authenticated users to overwrite any course's honor price and currency. The set_course_mode_price view accepts a URL-supplied course ID and updates its CourseMode row after checking only that the requester is logged in. A learner session and public course ID suffice; unauthorized changes affect catalog pricing and can propagate into ecommerce checkout and invoices.

The record

CVE
CVE-2026-53635
Published
Sep 2, 2026
Updated
Sep 2, 2026
Vendor
Open edX
Product
Open edX Platform
Classifications
CWE-862, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 59bb6d669e4fdc24d96afb809e12119372d9e257

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Open edX · Open edX Platformversion=< 59bb6d669e4fdc24d96afb809e12119372d9e257

Published CVSS scores

7.6GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo