CVE-2026-75027 (GCVE-0-2026-75027)
Vulnerability from cvelistv5 – Published: 2026-08-22 03:37 – Updated: 2026-08-22 03:37
VLAI
EPSS
VEX
Title
Themify Builder <= 7.8.0 - Missing Authorization to Unauthenticated Arbitrary Builder Data Modification via 'tb_update_old_data' AJAX Action
Summary
The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the stored Themify Builder styling data (padding and margin properties) of arbitrary posts, including private and draft posts, by supplying an attacker-controlled post ID and JSON styling payload. The nonce required by the handler is automatically emitted to all frontend pages rendered by the builder via wp_localize_script, meaning any unauthenticated visitor can trivially retrieve a valid nonce from page source and satisfy the only access control in place.
Severity
5.3 (Medium)
CWE
- CWE-862 - Missing Authorization
Assigner
References
10 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| themifyme | Themify Builder |
Affected:
0 , ≤ 7.8.0
(semver)
|
guessed |
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"value": "The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the stored Themify Builder styling data (padding and margin properties) of arbitrary posts, including private and draft posts, by supplying an attacker-controlled post ID and JSON styling payload. The nonce required by the handler is automatically emitted to all frontend pages rendered by the builder via wp_localize_script, meaning any unauthenticated visitor can trivially retrieve a valid nonce from page source and satisfy the only access control in place."
}
],
"metrics": [
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"baseSeverity": "MEDIUM",
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"problemTypes": [
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"providerMetadata": {
"dateUpdated": "2026-08-22T03:37:47.994Z",
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"references": [
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"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b1892207-0e51-4b2e-bc71-d6a0111b7041?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L693"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L518"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L227"
},
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"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder-stylesheet.php#L69"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L693"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L518"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L227"
},
{
"url": "https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-stylesheet.php#L69"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3653841%40themify-builder\u0026new=3653841%40themify-builder"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-08-17T15:09:32.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-08-21T15:10:25.000Z",
"value": "Disclosed"
}
],
"title": "Themify Builder \u003c= 7.8.0 - Missing Authorization to Unauthenticated Arbitrary Builder Data Modification via \u0027tb_update_old_data\u0027 AJAX Action"
}
},
"cveMetadata": {
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"datePublished": "2026-08-22T03:37:47.994Z",
"dateReserved": "2026-08-17T14:54:24.597Z",
"dateUpdated": "2026-08-22T03:37:47.994Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
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"date": "2026-08-22",
"epss": "0.00342",
"percentile": "0.27406"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-75027\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-08-22T04:18:15.057\",\"lastModified\":\"2026-08-22T04:18:15.057\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Themify Builder plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 7.8.0. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the stored Themify Builder styling data (padding and margin properties) of arbitrary posts, including private and draft posts, by supplying an attacker-controlled post ID and JSON styling payload. The nonce required by the handler is automatically emitted to all frontend pages rendered by the builder via wp_localize_script, meaning any unauthenticated visitor can trivially retrieve a valid nonce from page source and satisfy the only access control in place.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"themifyme\",\"product\":\"Themify Builder\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"7.8.0\",\"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:N/UI:N/S:U/C:N/I:L/A:N\",\"baseScore\":5.3,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":1.4}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-862\"}]}],\"references\":[{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder-stylesheet.php#L69\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L227\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L518\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.7.6/classes/class-themify-builder.php#L693\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder-stylesheet.php#L69\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L227\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L518\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/themify-builder/tags/7.8.0/classes/class-themify-builder.php#L693\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3653841%40themify-builder\u0026new=3653841%40themify-builder\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/b1892207-0e51-4b2e-bc71-d6a0111b7041?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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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