CVE-2026-56876
Full vulnerability record from the local CVENow database.
Description
extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files.
Severity
HIGH
CVSS score
8.6
(v4.0)
Vulnerability status
Analyzed
Source identifier
9119a7d8-5eab-497f-8521-727c672e3725
Published
2026-06-26 18:17:03.447000
Last modified
2026-10-25 17:10:00.197000
View original CVE JSON
{
"id": "CVE-2026-56876",
"sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725",
"published": "2026-06-26T18:17:03.447",
"lastModified": "2026-10-25T17:10:00.197",
"vulnStatus": "Analyzed",
"cveTags": [
{
"sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725",
"tags": [
"unsupported-when-assigned"
]
}
],
"descriptions": [
{
"lang": "en",
"value": "extract-zip does not validate symlink targets when extracting zip archives. When processing a malicious zip file containing a symlink with a relative path like '../../../../etc/passwd', extract-zip will extract the symlink without validation, allowing it to point outside the extraction directory. Depending on how extract-zip is used, an attacker could read or write to arbitrary files."
},
{
"lang": "es",
"value": "extract-zip no valida los destinos de los enlaces simbólicos al extraer archivos zip. Al procesar un archivo zip malicioso que contiene un enlace simbólico con una ruta relativa como ’.. / .. / .. / .. / etc/p4ssd’, extract-zip extraerá el enlace simbólico sin validación, permitiendo que apunte fuera del directorio de extracción. Dependiendo de cómo se utilice extract-zip, un atacante podría leer o escribir en archivos arbitrarios."
}
],
"affected": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"affectedData": [
{
"vendor": "max-mapper",
"product": "extract-zip",
"defaultStatus": "affected",
"versions": [
{
"version": "0",
"lessThan": "*",
"versionType": "custom",
"status": "affected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV40": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"type": "Secondary",
"cvssData": {
"version": "4.0",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/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",
"baseScore": 8.6,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"privilegesRequired": "NONE",
"userInteraction": "PASSIVE",
"vulnConfidentialityImpact": "HIGH",
"vulnIntegrityImpact": "HIGH",
"vulnAvailabilityImpact": "NONE",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"subAvailabilityImpact": "NONE",
"exploitMaturity": "NOT_DEFINED",
"confidentialityRequirement": "NOT_DEFINED",
"integrityRequirement": "NOT_DEFINED",
"availabilityRequirement": "NOT_DEFINED",
"modifiedAttackVector": "NOT_DEFINED",
"modifiedAttackComplexity": "NOT_DEFINED",
"modifiedAttackRequirements": "NOT_DEFINED",
"modifiedPrivilegesRequired": "NOT_DEFINED",
"modifiedUserInteraction": "NOT_DEFINED",
"modifiedVulnConfidentialityImpact": "NOT_DEFINED",
"modifiedVulnIntegrityImpact": "NOT_DEFINED",
"modifiedVulnAvailabilityImpact": "NOT_DEFINED",
"modifiedSubConfidentialityImpact": "NOT_DEFINED",
"modifiedSubIntegrityImpact": "NOT_DEFINED",
"modifiedSubAvailabilityImpact": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"Automatable": "NOT_DEFINED",
"Recovery": "NOT_DEFINED",
"valueDensity": "NOT_DEFINED",
"vulnerabilityResponseEffort": "NOT_DEFINED",
"providerUrgency": "NOT_DEFINED"
}
}
],
"cvssMetricV31": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N",
"baseScore": 8.1,
"baseSeverity": "HIGH",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "REQUIRED",
"scope": "UNCHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "NONE"
},
"exploitabilityScore": 2.8,
"impactScore": 5.2
}
],
"ssvcV203": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"ssvcData": {
"timestamp": "2026-06-23T15:08:40.844368Z",
"id": "CVE-2026-56876",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
},
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-06-30T19:58:59.934746Z",
"id": "CVE-2026-56876",
"options": [
{
"exploitation": "poc"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-22"
},
{
"lang": "en",
"value": "CWE-61"
}
]
}
],
"configurations": [
{
"nodes": [
{
"operator": "OR",
"negate": false,
"cpeMatch": [
{
"vulnerable": true,
"criteria": "cpe:2.3:a:max-mapper:extract-zip:*:*:*:*:*:node.js:*:*",
"versionEndIncluding": "2.0.1",
"matchCriteriaId": "F89CEAB5-8D4C-49C7-A896-9E45870F5293"
}
]
}
]
}
],
"references": [
{
"url": "https://github.com/ziad626/extract-zip-security-research/security/advisories/GHSA-x7jf-2287-qcpf",
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"tags": [
"Exploit",
"Third Party Advisory"
]
},
{
"url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-177-01.json",
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"tags": [
"Third Party Advisory"
]
},
{
"url": "https://www.cve.org/CVERecord?id=CVE-2026-56876",
"source": "9119a7d8-5eab-497f-8521-727c672e3725",
"tags": [
"Third Party Advisory"
]
}
]
}