CVSS 4.0
8.7 highCVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:NCVE-2026-128044 OpenMage magento-lts before 20.18.2 OAuth Callback URL Allowlist Bypass
High (8.7) in openmage magento-lts. EPSS 0.2% estimated probability of exploitation activity in the next 30 days.
On this page
OpenMage magento-lts before 20.18.2 and 21.x before 21.0.0-beta3 validates OAuth 1.0a oauth_callback URLs with a string-prefix check and falls back to accepting any well-formed URL. Attackers holding a leaked consumer key and secret can supply host-suffix, userinfo, or arbitrary callback URLs to capture an approving administrator's or customer's request token and verifier, then obtain an access token with the victim's API privileges.
Severity
CVSS 3.1
7.7 highCVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:N- EPSS
- 0.2% estimated probability of exploitation activity in the next 30 days; 9th percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CWE
- CWE-346 Origin Validation Error
- OWASP Top 10
- A07:2025 Authentication Failures
- Published
- Modified
- Assigned by
- VulnCheck (CNA)
- NVD analysis
- Deferred: the NVD does not plan to analyze it
- Record from
- the NVD, synced
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| OpenMage magento-lts | before 20.18.2 |
| OpenMage magento-lts | from 21.0.0-beta1 before 21.0.0-beta3 |
Attack patterns (CAPEC)
The attack patterns MITRE's CAPEC relates to this record's weaknesses, as MITRE names them. Credits. More on the page of CWE-346 (16).
History
- The NVD deferred its analysis
Changes since this site first stored the record. The same for every record: /api/public/changes.