OpenMage magento-lts before 20.19.0 and 21.0.0-beta1 before 21.0.0-beta3 contains an incorrect authorization
Source GCVE Database
Not known to be exploited · CVSS 5.1 Medium : upgrade to 20.19.0 when convenient.
Data as of 13 Nov 2026, 13:39 UTC
Thin evidence
One scorer or none| CNA (VulnCheck) | CVSS 4.0 | 5.1 |
|---|---|---|
| CNA (VulnCheck) | CVSS 3.1 | 2.7 |
- Patch
- Available – fixed in 20.19.0, 21.0.0-beta3
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 13 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 20.19.0; magento-lts to 21.0.0-beta3; openmage/magento-lts to 21.0.0-beta3 or 20.19.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| OpenMagemagento-lts | Affected
| Fixed in
|
| OpenMagemagento-lts | Affected
| Fixed in
|
GitHubopenmage/magento-ltspkg:github/openmage/magento-ltsOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
If you cannot patch yet, restrict administrator privileges to trusted users only and monitor for any unusual activity related to template content editing.
Description
OpenMage magento-lts versions before 20.19.0 and 21.0.0-beta1 before 21.0.0-beta3 have an authorization vulnerability in the template filter's {{layout}} directive. This flaw allows administrators with content editing rights to embed {{layout}} with arbitrary layout handles, bypassing the whitelist enforcement applied to the {{block}} directive. This can lead to rendering of disallowed blocks and limited information disclosure.
References
- github.com/OpenMage/magento-lts/security/advisories/GHSA-fqq6-76qg-2r96 (opens in a new tab)
- nvd.nist.gov/vuln/detail/CVE-2026-128052 (opens in a new tab)
- github.com/OpenMage/magento-lts/commit/055ccb866c0fadfed2c27e8c0e9ebd10db0199df (opens in a new tab)
- vulncheck.com/advisories/openmage-magento-lts-before-20.19.0-block-whitelist-bypass-via-layout-directive (opens in a new tab)