FKIE_CVE-2026-23704
Vulnerability from fkie_nvd - Published: 2026-02-04 07:16 - Updated: 2026-06-17 10:21
Severity
Summary
A non-administrative user can upload malicious files. When an administrator or the product accesses that file, an arbitrary script may be executed on the administrator's browser. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"product": "Movable Type (Software Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.4 to 9.0.5 (9.0 series)"
},
{
"status": "affected",
"version": "8.8.0 to 8.8.1 (8.8 series)"
},
{
"status": "affected",
"version": "8.0.2 to 8.0.8 (8.0 series)"
}
]
},
{
"product": "Movable Type Advanced (Software Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.4 to 9.0.5 (9.0 series)"
},
{
"status": "affected",
"version": "8.8.0 to 8.8.1 (8.8 series)"
},
{
"status": "affected",
"version": "8.0.2 to 8.0.8 (8.0 series)"
}
]
},
{
"product": "Movable Type Premium (Software Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.4 (MTP 9.0 series)"
},
{
"status": "affected",
"version": "2.13 and earlier (MTP 2 series)"
}
]
},
{
"product": "Movable Type Premium (Advanced Edition) (Software Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.4 (MTP 9.0 series)"
},
{
"status": "affected",
"version": "2.13 and earlier (MTP 2 series)"
}
]
},
{
"product": "Movable Type (Cloud Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.5 (9 series)"
},
{
"status": "affected",
"version": "8.8.1 (8 series)"
}
]
},
{
"product": "Movable Type Premium (Cloud Edition)",
"vendor": "Six Apart Ltd.",
"versions": [
{
"status": "affected",
"version": "9.0.5 (9 series)"
},
{
"status": "affected",
"version": "2.12 (MTP 2 series)"
}
]
}
],
"source": "vultures@jpcert.or.jp"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A non-administrative user can upload malicious files. When an administrator or the product accesses that file, an arbitrary script may be executed on the administrator\u0027s browser. Note that Movable Type 7 series and 8.4 series, which are End-of-Life (EOL), are affected by the vulnerability as well."
},
{
"lang": "es",
"value": "Un usuario no administrativo puede cargar archivos maliciosos. Cuando un administrador o el producto accede a ese archivo, un script arbitrario puede ejecutarse en el navegador del administrador. Tenga en cuenta que las series Movable Type 7 y 8.4, que est\u00e1n al final de su vida \u00fatil (EOL), tambi\u00e9n se ven afectadas por la vulnerabilidad."
}
],
"id": "CVE-2026-23704",
"lastModified": "2026-06-17T10:21:58.577",
"metrics": {
"cvssMetricV30": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"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:L",
"version": "3.0"
},
"exploitabilityScore": 2.3,
"impactScore": 3.7,
"source": "vultures@jpcert.or.jp",
"type": "Secondary"
}
],
"cvssMetricV40": [
{
"cvssData": {
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"availabilityRequirement": "NOT_DEFINED",
"baseScore": 5.1,
"baseSeverity": "MEDIUM",
"confidentialityRequirement": "NOT_DEFINED",
"exploitMaturity": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "LOW",
"subIntegrityImpact": "LOW",
"userInteraction": "PASSIVE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"version": "4.0",
"vulnAvailabilityImpact": "NONE",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "NOT_DEFINED"
},
"source": "vultures@jpcert.or.jp",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2026-23704",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-02-04T16:07:20.323679Z",
"version": "2.0.3"
}
}
]
},
"published": "2026-02-04T07:16:01.387",
"references": [
{
"source": "vultures@jpcert.or.jp",
"url": "https://jvn.jp/en/jp/JVN45405689/"
},
{
"source": "vultures@jpcert.or.jp",
"url": "https://movabletype.org/news/2026/02/mt-906-released.html"
},
{
"source": "vultures@jpcert.or.jp",
"url": "https://www.sixapart.jp/movabletype/news/2026/02/04-1100.html"
}
],
"sourceIdentifier": "vultures@jpcert.or.jp",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-434"
}
],
"source": "vultures@jpcert.or.jp",
"type": "Secondary"
}
]
}
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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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