CVE-2026-59193

Grav is a file-based Web platform. Prior to 2.0.0, an authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool because Installer::unZip calls ZipArchive::extractTo without limits on uncompressed size, entry count, or directory depth. This issue is fixed in version 2.0.0.

CVSS v3 4.9 MEDIUM

4.9^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.2 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781	Patch
https://github.com/getgrav/grav/releases/tag/2.0.0	Product
https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9	Exploit Vendor Advisory
https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:getgrav:grav::::::::
	cpe:2.3:a:getgrav:grav:2.0.0:beta1::::::

History

No history.

Information

Published : 2026-07-10 17:17

Updated : 2026-07-10 20:16

NVD link : CVE-2026-59193

Mitre link : CVE-2026-59193

CVE.ORG link : CVE-2026-59193

JSON object : View

Products Affected

getgrav

grav

CWE

CWE-409

Improper Handling of Highly Compressed Data (Data Amplification)

{"id": "CVE-2026-59193", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-59193", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T19:04:43.281679Z"}}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 4.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "HIGH", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 1.2}], "cvssMetricV40": [{"type": "Secondary", "source": "security-advisories@github.com", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/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", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "HIGH", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "affected": [{"source": "security-advisories@github.com", "affectedData": [{"vendor": "getgrav", "product": "grav", "versions": [{"status": "affected", "version": ">= 1.0.0, < 2.0.0"}]}]}], "published": "2026-07-10T17:17:02.773", "references": [{"url": "https://github.com/getgrav/grav/commit/23d6f2adf4ce11889c088ac8557c8314baeef781", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/releases/tag/2.0.0", "tags": ["Product"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://github.com/getgrav/grav/security/advisories/GHSA-2vcx-h8p2-9pg9", "tags": ["Exploit", "Vendor Advisory"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-409"}]}], "descriptions": [{"lang": "en", "value": "Grav is a file-based Web platform. Prior to 2.0.0, an authenticated admin.super user can crash Grav or fill the disk by uploading a specially crafted ZIP archive through the Direct Install tool because Installer::unZip calls ZipArchive::extractTo without limits on uncompressed size, entry count, or directory depth. This issue is fixed in version 2.0.0."}], "lastModified": "2026-07-10T20:16:48.807", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:getgrav:grav:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7FCD1A88-08DE-490F-83CB-2BF6B0ED52F2", "versionEndExcluding": "2.0.0", "versionStartIncluding": "1.0.0"}, {"criteria": "cpe:2.3:a:getgrav:grav:2.0.0:beta1:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1ABB323F-20AF-40F3-BCD9-262644D242A1"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}