CVE-2026-128049
OpenMage Magento LTS before 20.18.2 CSRF via OAuth Authorization Confirm
CVSS Score
9.0
EPSS Score
0.0%
EPSS Percentile
0th
OpenMage Magento LTS before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a cross-site request forgery vulnerability in the admin and storefront OAuth confirm and confirmSimple actions, which accept GET requests without form-key validation. Attackers holding OAuth consumer credentials can lure a logged-in administrator or customer to a crafted confirm URL that authorizes the attacker's request token, then exchange it at /oauth/token for a persistent REST API access token bound to the victim.
| CWE | CWE-352 |
| Vendor | openmage |
| Product | magento-lts |
| Published | Nov 13, 2026 |
Stay Ahead of the Next One
Get instant alerts for openmage magento-lts
Be the first to know when new critical vulnerabilities affecting openmage magento-lts are published — delivered to Slack, Telegram or Discord.
Get Free Alerts →
Free · No credit card · 60 sec setup
CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
OpenMage / magento-lts
0 < 20.18.2
OpenMage / magento-lts
21.0.0-beta1 < 21.0.0-beta3
References
github.com: https://github.com/OpenMage/magento-lts/security/advisories/GHSA-grrq-9gq2-vm55 github.com: https://github.com/OpenMage/magento-lts/commit/1f83e49b60e08aa7ba89dcc2d41ea21f62c0b796 vulncheck.com: https://www.vulncheck.com/advisories/openmage-magento-lts-before-20.18.2-csrf-via-oauth-authorization-confirm
Credits
🔍 C-Brown Abhi-Hackz colinmollenhour theroch Hanmac