CVE-2026-6378

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Source
https://cve.org/CVERecord?id=CVE-2026-6378
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6378.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-6378
Published
2026-05-02T03:36:42.285Z
Modified
2026-07-08T08:13:48.698705452Z
Severity
  • 6.4 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
Summary
Maxi Blocks <= 2.1.9 - Authenticated (Author+) Stored Cross-Site Scripting via Style Card REST API
Details

The Maxi Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the /wp-json/maxi-blocks/v1.0/style-card REST API endpoint in all versions up to, and including, 2.1.9 due to insufficient input sanitization and output escaping of the sc_styles parameter. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts that execute on every page where the plugin's style card styles are loaded, including across the entire WordPress admin panel.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/6xxx/CVE-2026-6378.json",
    "cwe_ids": [
        "CWE-79"
    ],
    "cna_assigner": "Wordfence"
}
References

Affected packages

Git / github.com/maxi-blocks/maxi-blocks

Affected ranges

Type
GIT
Repo
https://github.com/maxi-blocks/maxi-blocks
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
c95407298f09c94a85bada86127db5ab0a30d26f
Database specific 
{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.1.9"
        }
    ]
}

Affected versions

1.*
1.8.0
v.*
v.1.6.1
v1.*
v1.5.1
v1.5.2
v1.5.3
v1.5.5
v1.5.6
v1.5.7
v1.5.8
v1.6.0
v1.7.0
v1.7.1
v1.7.2
v1.7.3
v1.8.1
v1.8.2
v1.8.3
v1.8.4
v1.8.5
v1.8.8
v1.8.9
v1.9.0
v1.9.1
v1.9.2
v1.9.7
v1.9.8
v1.9.9
v2.*
v2.0.0
v2.0.1
v2.0.3
v2.0.4
v2.0.5
v2.0.6
v2.0.7
v2.0.9
v2.1.0
v2.1.2
v2.1.4
v2.1.6
v2.1.7
v2.1.8
v2.1.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-6378.json"