CVE-2026-1300 (GCVE-0-2026-1300)
Vulnerability from cvelistv5 – Published: 2026-01-24 09:08 – Updated: 2026-04-08 16:44
VLAI
EPSS
VEX
Title
Responsive Header Plugin <= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings Parameters
Summary
The Responsive Header plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple plugin settings parameters in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Severity
4.4 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| mehtevas | Responsive Header Plugin |
Affected:
0 , ≤ 1.0
(semver)
|
Credits
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-1300",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-01-26T17:43:54.920681Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-01-26T17:44:00.421Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"product": "Responsive Header Plugin",
"vendor": "mehtevas",
"versions": [
{
"lessThanOrEqual": "1.0",
"status": "affected",
"version": "0",
"versionType": "semver"
}
]
}
],
"credits": [
{
"lang": "en",
"type": "finder",
"value": "Bhumividh Treloges"
}
],
"descriptions": [
{
"lang": "en",
"value": "The Responsive Header plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple plugin settings parameters in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled."
}
],
"metrics": [
{
"cvssV3_1": {
"baseScore": 4.4,
"baseSeverity": "MEDIUM",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:H/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": "2026-04-08T16:44:51.715Z",
"orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"shortName": "Wordfence"
},
"references": [
{
"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/30821418-48c0-4bc6-8bf1-f558671bff24?source=cve"
},
{
"url": "https://downloads.wordpress.org/plugin/responsive-header.1.0.zip"
},
{
"url": "https://wordpress.org/plugins/responsive-header/"
},
{
"url": "https://plugins.trac.wordpress.org/browser/responsive-header/trunk/rhp-settings.php#L103"
},
{
"url": "https://plugins.trac.wordpress.org/browser/responsive-header/tags/1.0/rhp-settings.php#L103"
}
],
"timeline": [
{
"lang": "en",
"time": "2026-01-23T20:34:05.000Z",
"value": "Disclosed"
}
],
"title": "Responsive Header Plugin \u003c= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings Parameters"
}
},
"cveMetadata": {
"assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
"assignerShortName": "Wordfence",
"cveId": "CVE-2026-1300",
"datePublished": "2026-01-24T09:08:06.373Z",
"dateReserved": "2026-01-21T18:44:21.554Z",
"dateUpdated": "2026-04-08T16:44:51.715Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2",
"vulnerability-lookup:meta": {
"epss": {
"cve": "CVE-2026-1300",
"date": "2026-07-28",
"epss": "0.00199",
"percentile": "0.1004"
},
"nvd": "{\"cve\":{\"id\":\"CVE-2026-1300\",\"sourceIdentifier\":\"security@wordfence.com\",\"published\":\"2026-01-24T09:15:54.353\",\"lastModified\":\"2026-06-17T10:15:28.663\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The Responsive Header plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple plugin settings parameters in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.\"},{\"lang\":\"es\",\"value\":\"El plugin Responsive Header para WordPress es vulnerable a cross-site scripting almacenado a trav\u00e9s de m\u00faltiples par\u00e1metros de configuraci\u00f3n del plugin en todas las versiones hasta la 1.0, inclusive, debido a una sanitizaci\u00f3n de entrada y un escape de salida insuficientes. Esto hace posible que atacantes autenticados, con acceso de nivel de administrador o superior, inyecten scripts web arbitrarios en p\u00e1ginas que se ejecutar\u00e1n cada vez que un usuario acceda a una p\u00e1gina inyectada. Esto solo afecta a las instalaciones multisitio y a las instalaciones donde se ha deshabilitado unfiltered_html.\"}],\"affected\":[{\"source\":\"security@wordfence.com\",\"affectedData\":[{\"vendor\":\"mehtevas\",\"product\":\"Responsive Header Plugin\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThanOrEqual\":\"1.0\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"security@wordfence.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N\",\"baseScore\":4.4,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"CHANGED\",\"confidentialityImpact\":\"LOW\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":1.3,\"impactScore\":2.7}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2026-01-26T17:43:54.920681Z\",\"id\":\"CVE-2026-1300\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"partial\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"security@wordfence.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-79\"}]}],\"references\":[{\"url\":\"https://downloads.wordpress.org/plugin/responsive-header.1.0.zip\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/responsive-header/tags/1.0/rhp-settings.php#L103\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://plugins.trac.wordpress.org/browser/responsive-header/trunk/rhp-settings.php#L103\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://wordpress.org/plugins/responsive-header/\",\"source\":\"security@wordfence.com\"},{\"url\":\"https://www.wordfence.com/threat-intel/vulnerabilities/id/30821418-48c0-4bc6-8bf1-f558671bff24?source=cve\",\"source\":\"security@wordfence.com\"}]}}",
"redhat_vex": {
"current_release_date": "2026-03-27T08:12:07+00:00",
"cve": "CVE-2026-1300",
"id": "CVE-2026-1300",
"initial_release_date": "2026-01-01T00:00:00+00:00",
"product_status:known_not_affected": "1",
"source": "Red Hat CSAF VEX",
"status": "final",
"title": "Responsive Header Plugin \u003c= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings Parameters",
"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-1300.json",
"version": "3"
},
"vulnrichment": {
"containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-1300\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-01-26T17:43:54.920681Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-01-26T17:43:57.587Z\"}}], \"cna\": {\"title\": \"Responsive Header Plugin \u003c= 1.0 - Authenticated (Administrator+) Stored Cross-Site Scripting via Settings Parameters\", \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Bhumividh Treloges\"}], \"metrics\": [{\"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 4.4, \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N\"}}], \"affected\": [{\"vendor\": \"mehtevas\", \"product\": \"Responsive Header Plugin\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"1.0\"}], \"defaultStatus\": \"unaffected\"}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2026-01-23T20:34:05.000Z\", \"value\": \"Disclosed\"}], \"references\": [{\"url\": \"https://www.wordfence.com/threat-intel/vulnerabilities/id/30821418-48c0-4bc6-8bf1-f558671bff24?source=cve\"}, {\"url\": \"https://downloads.wordpress.org/plugin/responsive-header.1.0.zip\"}, {\"url\": \"https://wordpress.org/plugins/responsive-header/\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/responsive-header/trunk/rhp-settings.php#L103\"}, {\"url\": \"https://plugins.trac.wordpress.org/browser/responsive-header/tags/1.0/rhp-settings.php#L103\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The Responsive Header plugin for WordPress is vulnerable to Stored Cross-Site Scripting via multiple plugin settings parameters in all versions up to, and including, 1.0 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-79\", \"description\": \"CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"shortName\": \"Wordfence\", \"dateUpdated\": \"2026-04-08T16:44:51.715Z\"}}}",
"cveMetadata": "{\"cveId\": \"CVE-2026-1300\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-08T16:44:51.715Z\", \"dateReserved\": \"2026-01-21T18:44:21.554Z\", \"assignerOrgId\": \"b15e7b5b-3da4-40ae-a43c-f7aa60e62599\", \"datePublished\": \"2026-01-24T09:08:06.373Z\", \"assignerShortName\": \"Wordfence\"}",
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
}
}
Loading…
Loading…
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.
Loading…
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.
Loading…
Loading…