{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-103877", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-10-01T12:43:28.815Z", "datePublished": "2026-10-02T10:08:42.494Z", "dateUpdated": "2026-10-07T22:07:09.152Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-10-02T10:08:42.494Z" }, "title": "Apache Directory LDAP API: Unsafe loading of Java code from LDAP schema elements", "problemTypes": [ { "descriptions": [ { "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "cweId": "CWE-502", "type": "CWE" } ] } ], "source": { "discovery": "INTERNAL" }, "affected": [ { "vendor": "Apache Software Foundation", "product": "Apache Directory LDAP API", "packageURL": "pkg:maven/org.apache.directory.api/api-ldap-schema-data", "versions": [ { "status": "affected", "version": "2.1.0", "lessThan": "2.1.9", "versionType": "semver" } ], "defaultStatus": "unaffected", "collectionURL": "https://repo.maven.apache.org/maven2", "packageName": "org.apache.directory.api:api-ldap-schema-data" } ], "descriptions": [ { "value": "Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API.\n\n\n\nA rogue/compromised LDAP server (or pre-TLS MITM) can answer a client's loadSchema() subschema search with a schema object that contains a serialized Java class, allowing some potential RCE. \n\n\n\nThis issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.\n\n\n\nUsers are recommended to upgrade to version 2.1.9, which fixes the issue.", "lang": "en", "supportingMedia": [ { "type": "text/html", "base64": false, "value": "
Deserialization of Untrusted Data vulnerability in Apache Directory LDAP API.A rogue/compromised LDAP server (or pre-TLS MITM) can answer a client's loadSchema() subschema search with a schema object that contains a serialized Java class, allowing some potential RCE.
This issue affects Apache Directory LDAP API: from 2.1.0 before 2.1.9.
Users are recommended to upgrade to version 2.1.9, which fixes the issue.
" } ] } ], "references": [ { "url": "https://lists.apache.org/thread.html/sys8l881blqfgoc3o724jl32bmjl8pvw", "tags": [ "vendor-advisory" ] } ], "metrics": [ { "other": { "type": "Textual description of severity", "content": { "text": "critical" } }, "scenarios": [ { "lang": "en", "value": "GENERAL" } ] } ], "credits": [ { "lang": "en", "value": "Claude Security", "type": "tool" }, { "lang": "en", "value": "The Apache Software Foundation", "type": "finder" } ], "x_generator": { "engine": "Vulnogram 1.0.3" } }, "adp": [ { "title": "CVE Program Container", "references": [ { "url": "http://www.openwall.com/lists/oss-security/2026/10/02/5" } ], "providerMetadata": { "orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-10-02T21:07:21.080Z" } }, { "metrics": [ { "cvssV3_1": { "scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH" } }, { "other": { "type": "ssvc", "content": { "timestamp": "2026-10-07T20:54:06.776749Z", "id": "CVE-2026-103877", "options": [ { "Exploitation": "none" }, { "Automatable": "yes" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-07T22:07:09.152Z" } } ] } }