CVE-2026-13295 (GCVE-0-2026-13295)
Vulnerability from cvelistv5 – Published: 2026-06-27 06:50 – Updated: 2026-06-27 06:50
VLAI
Title
Page Builder by SiteOrigin <= 2.34.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via panels_data Parameter
Summary
The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta — outside the scope of WordPress's unfiltered_html carve-out — meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.
Severity
6.4 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| gpriday | Page Builder by SiteOrigin |
Affected:
0 , ≤ 2.34.3
(semver)
|
Credits
{
"containers": {
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Page Builder by SiteOrigin",
"vendor": "gpriday",
"versions": [
{
"lessThanOrEqual": "2.34.3",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
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"type": "finder",
"value": "lhking"
}
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"descriptions": [
{
"lang": "en",
"value": "The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta \u2014 outside the scope of WordPress\u0027s unfiltered_html carve-out \u2014 meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-79",
"description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-06-27T06:50:58.291Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/7830b3dc-7d20-4516-b4d6-57636ca773e9?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L1085"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L236"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L254"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/renderer.php#L950"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L1085"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L236"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L254"
},
{
"url": "https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/renderer.php#L950"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3585987%40siteorigin-panels\u0026new=3585987%40siteorigin-panels\u0026sfp_email=\u0026sfph_mail="
}
],
"timeline": [
{
"lang": "en",
"time": "2026-06-24T22:23:54.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-06-26T17:44:35.000Z",
"value": "Disclosed"
}
],
"title": "Page Builder by SiteOrigin \u003c= 2.34.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via panels_data Parameter"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-13295",
"datePublished": "2026-06-27T06:50:58.291Z",
"dateReserved": "2026-06-24T22:08:37.541Z",
"dateUpdated": "2026-06-27T06:50:58.291Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-13295",
"date": "2026-06-28",
"epss": "0.00241",
"percentile": "0.15122"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-13295\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-06-27T08:16:44.800\",\"lastModified\":\"2026-06-27T08:16:44.800\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta \u2014 outside the scope of WordPress\u0027s unfiltered_html carve-out \u2014 meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"gpriday\",\"product\":\"Page Builder by SiteOrigin\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"2.34.3\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":6.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.1,\"impactScore\":2.7}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L1085\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L236\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/admin.php#L254\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.1/inc/renderer.php#L950\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L1085\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L236\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/admin.php#L254\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/siteorigin-panels/tags/2.34.3/inc/renderer.php#L950\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/changeset?sfp_email=\u0026sfph_mail=\u0026reponame=\u0026old=3585987%40siteorigin-panels\u0026new=3585987%40siteorigin-panels\u0026sfp_email=\u0026sfph_mail=\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/7830b3dc-7d20-4516-b4d6-57636ca773e9?source=cve\",\"source\":\"security@wordfence.com\"}]}}"
}
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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