FKIE_CVE-2018-20149
Vulnerability from fkie_nvd - Published: 2018-12-14 20:29 - Updated: 2026-06-17 01:52
Severity
Summary
In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| wordpress | wordpress | * | |
| wordpress | wordpress | * | |
| debian | debian_linux | 8.0 | |
| debian | debian_linux | 9.0 |
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "cve@mitre.org"
}
],
"configurations": [
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
"matchCriteriaId": "CEEA870E-2BB4-4720-A3D9-1FFBA5596D94",
"versionEndExcluding": "4.9.9",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:wordpress:wordpress:*:*:*:*:*:*:*:*",
"matchCriteriaId": "5CCEB112-4070-4BB4-8974-C289FAF79E79",
"versionEndExcluding": "5.0.1",
"versionStartIncluding": "5.0",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
},
{
"nodes": [
{
"cpeMatch": [
{
"criteria": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
"vulnerable": true
}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "In WordPress before 4.9.9 and 5.x before 5.0.1, when the Apache HTTP Server is used, authors could upload crafted files that bypass intended MIME type restrictions, leading to XSS, as demonstrated by a .jpg file without JPEG data."
},
{
"lang": "es",
"value": "En WordPress, en versiones anteriores a la 4.9.9 y versiones 5.x anteriores a la 5.0.1, cuando se emplea el servidor HTTP de Apache, los autores podr\u00edan subir archivos arbitrarios que omiten las restricciones de tipo MIME planeadas, lo que conduce a Cross-Site Scripting (XSS). Esto queda demostrado por un archivo .jpg sin datos JPEG."
}
],
"id": "CVE-2018-20149",
"lastModified": "2026-06-17T01:52:20.880",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "LOW",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "NONE",
"baseScore": 3.5,
"confidentialityImpact": "NONE",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": true
}
],
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 5.4,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "REQUIRED",
"vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
"version": "3.0"
},
"exploitabilityScore": 2.3,
"impactScore": 2.7,
"source": "nvd@nist.gov",
"type": "Primary"
}
]
},
"published": "2018-12-14T20:29:00.437",
"references": [
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/106220"
},
{
"source": "cve@mitre.org",
"tags": [
"Product",
"Vendor Advisory"
],
"url": "https://codex.wordpress.org/Version_4.9.9"
},
{
"source": "cve@mitre.org",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/WordPress/WordPress/commit/246a70bdbfac3bd45ff71c7941deef1bb206b19a"
},
{
"source": "cve@mitre.org",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html"
},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/"
},
{
"source": "cve@mitre.org",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://wordpress.org/support/wordpress-version/version-5-0-1/"
},
{
"source": "cve@mitre.org",
"tags": [
"Vendor Advisory"
],
"url": "https://wpvulndb.com/vulnerabilities/9175"
},
{
"source": "cve@mitre.org",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2019/dsa-4401"
},
{
"source": "cve@mitre.org",
"tags": [
"Press/Media Coverage",
"Third Party Advisory"
],
"url": "https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory",
"VDB Entry"
],
"url": "http://www.securityfocus.com/bid/106220"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Product",
"Vendor Advisory"
],
"url": "https://codex.wordpress.org/Version_4.9.9"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Patch",
"Third Party Advisory"
],
"url": "https://github.com/WordPress/WordPress/commit/246a70bdbfac3bd45ff71c7941deef1bb206b19a"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Mailing List",
"Third Party Advisory"
],
"url": "https://lists.debian.org/debian-lts-announce/2019/02/msg00019.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://wordpress.org/news/2018/12/wordpress-5-0-1-security-release/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Release Notes",
"Vendor Advisory"
],
"url": "https://wordpress.org/support/wordpress-version/version-5-0-1/"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "https://wpvulndb.com/vulnerabilities/9175"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Third Party Advisory"
],
"url": "https://www.debian.org/security/2019/dsa-4401"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Press/Media Coverage",
"Third Party Advisory"
],
"url": "https://www.zdnet.com/article/wordpress-plugs-bug-that-led-to-google-indexing-some-user-passwords/"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-79"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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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.
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