CVE-2026-15797 (GCVE-0-2026-15797)
Vulnerability from cvelistv5 – Published: 2026-09-18 09:28 – Updated: 2026-09-18 09:28
VLAI
EPSS
VEX
Title
Popup Maker <= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_title
Summary
The Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post_title in all versions up to, and including, 1.24.0 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 requires the attacker to create a post with an HTML entity-encoded payload in the title, which bypasses sanitize_text_field on save and is later decoded and executed by the browser when rendered by the Select2 component.
Severity
6.4 (Medium)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
11 references
Impacted products
1 product
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
| danieliser | Popup Maker – Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder |
Affected:
0 , ≤ 1.24.0
(semver)
|
guessed |
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"product": "Popup Maker \u2013 Boost Sales, Conversions, Optins, Subscribers with the Ultimate WP Popup Builder",
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}
],
"metrics": [
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"type": "CWE"
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"providerMetadata": {
"dateUpdated": "2026-09-18T09:28:01.002Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
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"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/973b23c6-4edd-4f89-b5cf-68e83cfdb8ac?source=cve"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Admin/Ajax.php#L163"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/dist/assets/admin-general.js#L1"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Admin/Ajax.php#L152"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Helpers.php#L192"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Admin/Ajax.php#L163"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/dist/assets/admin-general.js#L1"
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"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Admin/Ajax.php#L152"
},
{
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Helpers.php#L192"
},
{
"url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026new=3690634%40popup-maker%2Ftags%2F1.25.0\u0026old=3648112%40popup-maker%2Ftags%2F1.24.0"
},
{
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}
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"timeline": [
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"lang": "en",
"time": "2026-07-14T20:38:24.000Z",
"value": "Vendor Notified"
},
{
"lang": "en",
"time": "2026-09-17T20:49:14.000Z",
"value": "Disclosed"
}
],
"title": "Popup Maker \u003c= 1.24.0 - Authenticated (Contributor+) Stored Cross-Site Scripting via post_title"
}
},
"cveMetadata": {
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"cveId": "CVE-2026-15797",
"datePublished": "2026-09-18T09:28:01.002Z",
"dateReserved": "2026-07-14T20:23:01.788Z",
"dateUpdated": "2026-09-18T09:28:01.002Z",
"state": "PUBLISHED"
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"dataVersion": "5.2",
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"date": "2026-09-18",
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"percentile": "0.36827"
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"nvd": {
"cve": {
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"vendor": "danieliser",
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"version": "0",
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"cveTags": [],
"descriptions": [
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}
],
"id": "CVE-2026-15797",
"lastModified": "2026-09-18T13:23:37.403",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 6.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N",
"version": "3.1"
},
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"impactScore": 2.7,
"source": "security@wordfence.com",
"type": "Primary"
}
]
},
"published": "2026-09-18T10:17:06.133",
"references": [
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"source": "security@wordfence.com",
"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.22.0/classes/Admin/Ajax.php#L152"
},
{
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},
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"url": "https://plugins.trac.wordpress.org/browser/popup-maker/tags/1.23.0/classes/Helpers.php#L192"
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"type": "Primary"
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}
}
}
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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