CVE-2026-64851

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Source

https://cve.org/CVERecord?id=CVE-2026-64851

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64851.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-64851

Aliases

GHSA-q5fw-vpqc-fgph

Published

2026-08-19T15:56:43Z

Modified

2026-09-11T03:31:03Z

Severity

8.5 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator

Summary

Grav Shortcode Core Plugin: Stored XSS in shortcode-core attribute handlers

Details

Grav Shortcode Core Plugin allows for the development shortcode plugins that utilize the common format utilized by WordPress and BBCode. Prior to 6.2.2, Grav Shortcode Core passes shortcode syntax through Security::detectXss() because it contains no literal less-than character, then ColorShortcode.php and related attribute handlers concatenate an attacker-controlled parameter into HTML without encoding. An account with admin.pages permission can close the generated attribute and add an event handler, creating stored cross-site scripting that executes for visitors or administrators who view the page. This issue is fixed in version 6.2.2.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64851.json"
}

References

Affected packages

Git / github.com/getgrav/grav-plugin-shortcode-core

Affected ranges

Type

GIT

Repo

https://github.com/getgrav/grav-plugin-shortcode-core

Events

Introduced

Fixed

2a55eac8a2cc7f6c2d4923ab2fa7991039620597

Fixed

774d527d2378005743142db5d57ce28e0bf63ba3

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "6.2.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

2.*

2.2.0

2.3.0

5.*

5.0.2

5.0.3

5.0.4

5.0.5

5.0.6

5.0.7

5.1.0

5.1.1

5.1.2

5.1.3

5.2.0

5.2.1

5.3.0

5.3.1

5.3.2

5.4.0

6.*

6.0.0

6.1.0

6.2.0

6.2.1

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-64851.json"