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CVE-2026-128049VulnerabilityPublished

OpenMage Magento LTS before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 contains a cross-site request forgery

Source GCVE Database

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Authoritative record:CVE-2026-128049· Critical 9.4

Not known to be exploited · CVSS 9.4 Critical : upgrade to 20.18.2 as a priority.

Data as of 13 Nov 2026, 13:38 UTC

CVSS 4.0 base score
9.4Critical
How severe the flaw is on the 0–10 CVSS scale.

Thin evidence

One scorer or none
CVSS scores by source
CNA (VulnCheck)CVSS 4.09.4
CNA (VulnCheck)CVSS 3.19.0
Patch
Available – fixed in 20.18.2, 21.0.0-beta3
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 13 Nov 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 13 Nov 2026.

What to do

Upgrade magento-lts to 20.18.2; magento-lts to 21.0.0-beta3; openmage/magento-lts to 21.0.0-beta3 or 20.18.2.

Affected software

ProductAffectedFixed in
OpenMagemagento-ltsAffected
  • <20.18.2
Fixed in
  • 20.18.2
OpenMagemagento-ltsAffected
  • >=21.0.0-beta1 <21.0.0-beta3
Fixed in
  • 21.0.0-beta3
GitHubopenmage/magento-ltspkg:github/openmage/magento-ltsOther threatsAffected
  • <20.18.2
  • >=21.0.0-beta1 <21.0.0-beta3
Fixed in
  • 20.18.2
  • 21.0.0-beta3

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A fix is available in OpenMage Magento LTS versions 20.18.2 and 21.0.0-beta3 and later. Users should upgrade to these fixed versions to remediate the vulnerability. No vendor advisory content was provided to indicate alternative mitigations or temporary workarounds.

Description

OpenMage Magento LTS versions before 20.18.2 and 21.0.0-beta1 before 21.0.0-beta3 have a critical cross-site request forgery (CSRF) vulnerability in the admin and storefront OAuth confirm actions. These actions accept GET requests without form-key validation, allowing attackers with OAuth consumer credentials to trick logged-in administrators or customers into authorizing malicious OAuth tokens. This can lead to persistent REST API access tokens bound to the victim.

References

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