CVE-2026-56095 - Vulnerability Details - OpenCVE

The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface.

Attack Vector Network

Attack Complexity High

Privileges Required Low

Attack Requirements Present

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

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.

Key SSVC decision points have not yet been added.

No data.

No data.

No data.

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://typo3.org/security/advisory/typo3-ext-sa-2026-025

History

Tue, 25 Aug 2026 09:15:00 +0000

Type	Values Removed	Values Added
Description		The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface.
Title		Insecure Deserialization in extension "Apache Solr for TYPO3 - Enterprise Search" (solr)
Weaknesses		CWE-502
References		https://typo3.org/security/advisory/typo3-ext-sa-2026-025
Metrics		cvssV4_0 `{'score': 7.7, 'vector': 'CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}`

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: TYPO3

Published: 2026-08-25T09:00:47.261Z

Updated: 2026-08-25T09:00:47.261Z

Reserved: 2026-06-18T17:29:39.231Z

Link: CVE-2026-56095

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-25T09:17:31.457

Modified: 2026-08-25T09:17:31.457

Link: CVE-2026-56095

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-502

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-56095", "assignerOrgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "state": "PUBLISHED", "assignerShortName": "TYPO3", "dateReserved": "2026-06-18T17:29:39.231Z", "datePublished": "2026-08-25T09:00:47.261Z", "dateUpdated": "2026-08-25T09:00:47.261Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "shortName": "TYPO3", "dateUpdated": "2026-08-25T09:00:47.261Z"}, "title": "Insecure Deserialization in extension \"Apache Solr for TYPO3 - Enterprise Search\" (solr)", "datePublic": "2026-08-25T09:00:00.000Z", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "type": "CWE"}]}], "affected": [{"vendor": "TYPO3", "product": "Extension \"Apache Solr for TYPO3 - Enterprise Search\"", "collectionURL": "https://packagist.org/", "packageName": "apache-solr-for-typo3/solr", "repo": "https://github.com/TYPO3-Solr/ext-solr", "versions": [{"status": "affected", "version": "13.0.0", "lessThan": "13.1.4", "versionType": "semver"}, {"status": "affected", "version": "12.0.0", "lessThan": "12.1.4", "versionType": "semver"}, {"status": "affected", "version": "0", "lessThan": "11.6.6", "versionType": "semver"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface."}]}], "references": [{"url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-025", "tags": ["vendor-advisory"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 7.7, "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "credits": [{"lang": "en", "value": "Marc Bastian Heinrichs", "type": "reporter"}, {"lang": "en", "value": "Rafael K\u00e4hm", "type": "remediation developer"}, {"lang": "en", "value": "EXT:solr team by dkd Internet Service GmbH", "type": "remediation developer"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.0"}}}}

{"affected": [{"affectedData": [{"collectionURL": "https://packagist.org/", "defaultStatus": "unaffected", "packageName": "apache-solr-for-typo3/solr", "product": "Extension \"Apache Solr for TYPO3 - Enterprise Search\"", "repo": "https://github.com/TYPO3-Solr/ext-solr", "vendor": "TYPO3", "versions": [{"lessThan": "13.1.4", "status": "affected", "version": "13.0.0", "versionType": "semver"}, {"lessThan": "12.1.4", "status": "affected", "version": "12.0.0", "versionType": "semver"}, {"lessThan": "11.6.6", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The extension's indexer passed every field value returned by content object rendering through PHP's unserialize() function when transferring multi-value data for the SOLR_CLASSIFICATION, SOLR_MULTIVALUE and SOLR_RELATION content object types, rather than a safe format. If user-generated content saved in the TYPO3 database can reach an indexed field, this exposes a PHP Object Injection surface."}], "id": "CVE-2026-56095", "lastModified": "2026-08-25T09:17:31.457", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "HIGH", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 7.7, "baseSeverity": "HIGH", "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": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}, "published": "2026-08-25T09:17:31.457", "references": [{"source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "url": "https://typo3.org/security/advisory/typo3-ext-sa-2026-025"}], "sourceIdentifier": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "f4fb688c-4412-4426-b4b8-421ecf27b14a", "type": "Secondary"}]}