CVE-2026-66756 - Vulnerability Details - OpenCVE

Improper Protection of Alternate Path vulnerability in Apache Tika. This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1. Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Vendors	Products
Apache	Tika

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors	Products
Apache	Tika

References

Link	Providers
https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568

History

Thu, 30 Jul 2026 22:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Thu, 30 Jul 2026 21:15:00 +0000

Type	Values Removed	Values Added
First Time appeared		Apache Apache tika
Vendors & Products		Apache Apache tika

Thu, 30 Jul 2026 19:30:00 +0000

Type	Values Removed	Values Added
Description		Improper Protection of Alternate Path vulnerability in Apache Tika. This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1. Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.
Title		Apache Tika: unpack endpoint in tika-server allows configuration with unsecureFeatures=false
Weaknesses		CWE-424
References		https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568
Metrics		cvssV4_0 `{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N'}`

MITRE

Status: PUBLISHED

Assigner: apache

Published: 2026-07-30T19:18:07.900Z

Updated: 2026-07-30T19:33:01.657Z

Reserved: 2026-07-27T17:13:07.869Z

Link: CVE-2026-66756

Vulnrichment

Updated: 2026-07-30T19:30:52.794Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

Updated: 2026-07-30T21:00:20Z

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66756", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-27T17:13:07.869Z", "datePublished": "2026-07-30T19:18:07.900Z", "dateUpdated": "2026-07-30T19:33:01.657Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.tika:tika-server", "product": "Apache Tika", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "4.0.0-beta-1", "status": "affected", "version": "4.0.0-alpha-1", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "George Chen discovered this issue and proposed fixes"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Protection of Alternate Path vulnerability in Apache Tika.</p><p>This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.</p><p>Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.</p>"}], "value": "Improper Protection of Alternate Path vulnerability in Apache Tika.\n\nThis issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.\n\nUsers are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 6.9, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-424", "description": "CWE-424 Improper Protection of Alternate Path", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-07-30T19:18:07.900Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache Tika: unpack endpoint in tika-server allows configuration with unsecureFeatures=false", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/07/30/24"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-30T19:30:52.794Z"}}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-30T19:32:44.239123Z", "id": "CVE-2026-66756", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-30T19:33:01.657Z"}}]}}

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-66756", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-07-27T17:13:07.869Z", "datePublished": "2026-07-30T19:18:07.900Z", "dateUpdated": "2026-07-30T19:33:01.657Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.tika:tika-server", "product": "Apache Tika", "vendor": "Apache Software Foundation", "versions": [{"lessThan": "4.0.0-beta-1", "status": "affected", "version": "4.0.0-alpha-1", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "finder", "value": "George Chen discovered this issue and proposed fixes"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Improper Protection of Alternate Path vulnerability in Apache Tika.</p><p>This issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.</p><p>Users are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue.</p>"}], "value": "Improper Protection of Alternate Path vulnerability in Apache Tika.\n\nThis issue affects Apache Tika: from 4.0.0-alpha-1 before 4.0.0-beta-1.\n\nUsers are recommended to upgrade to version 4.0.0-beta-1, which fixes the issue."}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 6.9, "baseSeverity": "MEDIUM", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "LOW", "vulnConfidentialityImpact": "LOW", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-424", "description": "CWE-424 Improper Protection of Alternate Path", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-07-30T19:18:07.900Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/ynjg5lxwhqpc83pczf5y5561o2l4o568"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache Tika: unpack endpoint in tika-server allows configuration with unsecureFeatures=false", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/07/30/24"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-07-30T19:30:52.794Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-66756", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-30T19:32:44.239123Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-30T19:32:51.831Z"}}]}}