CVE-2026-42779

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-42779", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "state": "PUBLISHED", "assignerShortName": "apache", "dateReserved": "2026-04-29T13:32:57.549Z", "datePublished": "2026-05-01T10:00:43.712Z", "dateUpdated": "2026-05-02T03:55:25.715Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.mina:mina-core", "product": "Apache MINA", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.2.6", "status": "affected", "version": "2.2.X", "versionType": "semver"}, {"lessThanOrEqual": "2.1.11", "status": "affected", "version": "2.1.X", "versionType": "semver"}]}], "credits": [{"lang": "en", "type": "reporter", "value": "Venkatraman Kumar, Securin"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<div><div>The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:</div><div><div></div></div><br></div><div><br></div><div>Apache <b>MINA</b>'s <i>AbstractIoBuffer.resolveClass()</i> contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.</div><div><br></div><div>The fix checks if the class is present in the accepted class filter <b>before</b> calling <i>Class.forName()</i>. </div><div><br></div><div></div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.11, and 2.2.0 &lt;= 2.2.6.\n<br>\n\n<br>\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n<br>\n\n<br>\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n<br>\n\n<br>\nApplications using Apache MINA are advised to upgrade."}], "value": "The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\n\n\n\n\n\n\n\nApache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.\n\n\n\n\nThe fix checks if the class is present in the accepted class filter before calling Class.forName(). \n\n\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6.\n\n\n\n\n\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\n\nApplications using Apache MINA are advised to upgrade."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-01T10:00:43.712Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter \u2014 Full Object Deserialization RCE (take 2)", "x_generator": {"engine": "Vulnogram 0.2.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-05-01T00:00:00+00:00", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3", "id": "CVE-2026-42779"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-02T03:55:25.715Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-42779", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-05-01T13:20:41.473986Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-05-01T13:20:46.544Z"}}], "cna": {"title": "Apache MINA: AbstractIoBuffer.resolveClass() null-clazz Branch Skips acceptMatchers Filter \u2014 Full Object Deserialization RCE (take 2)", "source": {"discovery": "UNKNOWN"}, "credits": [{"lang": "en", "type": "reporter", "value": "Venkatraman Kumar, Securin"}], "metrics": [{"format": "CVSS", "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"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Apache Software Foundation", "product": "Apache MINA", "versions": [{"status": "affected", "version": "2.2.X", "versionType": "semver", "lessThanOrEqual": "2.2.6"}, {"status": "affected", "version": "2.1.X", "versionType": "semver", "lessThanOrEqual": "2.1.11"}], "packageName": "org.apache.mina:mina-core", "collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected"}], "references": [{"url": "https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "Vulnogram 0.2.0"}, "descriptions": [{"lang": "en", "value": "The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\n\n\n\n\n\n\n\nApache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.\n\n\n\n\nThe fix checks if the class is present in the accepted class filter before calling Class.forName(). \n\n\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6.\n\n\n\n\n\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\n\nApplications using Apache MINA are advised to upgrade.", "supportingMedia": [{"type": "text/html", "value": "<div><div>The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:</div><div><div></div></div><br></div><div><br></div><div>Apache <b>MINA</b>'s <i>AbstractIoBuffer.resolveClass()</i> contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.</div><div><br></div><div>The fix checks if the class is present in the accepted class filter <b>before</b> calling <i>Class.forName()</i>. </div><div><br></div><div></div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.11, and 2.2.0 &lt;= 2.2.6.\n<br>\n\n<br>\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n<br>\n\n<br>\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n<br>\n\n<br>\nApplications using Apache MINA are advised to upgrade.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-502", "description": "CWE-502 Deserialization of Untrusted Data"}]}], "providerMetadata": {"orgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "shortName": "apache", "dateUpdated": "2026-05-01T10:00:43.712Z"}}}, "cveMetadata": {"cveId": "CVE-2026-42779", "state": "PUBLISHED", "dateUpdated": "2026-05-02T03:55:25.715Z", "dateReserved": "2026-04-29T13:32:57.549Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2026-05-01T10:00:43.712Z", "assignerShortName": "apache"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2", "defaultStatus": "unaffected", "packageName": "org.apache.mina:mina-core", "product": "Apache MINA", "vendor": "Apache Software Foundation", "versions": [{"lessThanOrEqual": "2.2.6", "status": "affected", "version": "2.2.X", "versionType": "semver"}, {"lessThanOrEqual": "2.1.11", "status": "affected", "version": "2.1.X", "versionType": "semver"}]}], "source": "security@apache.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:apache:mina:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD7E18F5-1CE6-4CD7-8A0D-BD0C2574FF12", "versionEndExcluding": "2.1.12", "versionStartIncluding": "2.1.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:apache:mina:*:*:*:*:*:*:*:*", "matchCriteriaId": "758E989E-5CB0-471C-AADB-43EB3FB95407", "versionEndExcluding": "2.2.7", "versionStartIncluding": "2.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The fix for CVE-2026-41635 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\n\n\n\n\n\n\n\nApache MINA's AbstractIoBuffer.resolveClass() contains two branches, one of them (for static classes or primitive types) does not check the class at all, bypassing the classname allowlist and allowing arbitrary code to be executed.\n\n\n\n\nThe fix checks if the class is present in the accepted class filter before calling Class.forName(). \n\n\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.11, and 2.2.0 <= 2.2.6.\n\n\n\n\n\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\n\nApplications using Apache MINA are advised to upgrade."}, {"lang": "es", "value": "La soluci\u00f3n para CVE-2026-41635 no se aplic\u00f3 a las ramas 2.1.X y 2.2.X. Aqu\u00ed estaba la descripci\u00f3n original del problema:\n\nEl m\u00e9todo AbstractIoBuffer.resolveClass() de Apache MINA contiene dos ramas, una de ellas (para clases est\u00e1ticas o tipos primitivos) no verifica la clase en absoluto, eludiendo la lista de permitidos de nombres de clase y permitiendo la ejecuci\u00f3n de c\u00f3digo arbitrario.\n\nLa soluci\u00f3n verifica si la clase est\u00e1 presente en el filtro de clases aceptadas antes de llamar a Class.forName().\n\nLas versiones afectadas son Apache MINA 2.1.0 menor o igual que 2.1.11, y 2.2.0 menor o igual que 2.2.6.\n\nEl problema se resuelve en Apache MINA 2.1.12, y 2.2.7 aplicando la lista de permitidos de nombres de clase antes.\n\nSe ven afectadas las aplicaciones que usan Apache MINA que llaman a IoBuffer.getObject().\n\nSe aconseja a las aplicaciones que usan Apache MINA que actualicen."}], "id": "CVE-2026-42779", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "security@apache.org", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42779", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-01T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-01T11:16:19.537", "references": [{"source": "security@apache.org", "tags": ["Mailing List", "Patch", "Vendor Advisory"], "url": "https://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0"}], "sourceIdentifier": "security@apache.org", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-502"}], "source": "security@apache.org", "type": "Secondary"}]}

{"bugzilla": {"description": "Apache MINA: Apache MINA: Arbitrary Code Execution via Classname Allowlist Bypass", "id": "2464322", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464322"}, "csaw": false, "cvss3": {"cvss3_base_score": "9.8", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "status": "draft"}, "cwe": "CWE-502", "details": ["A flaw was found in Apache MINA. An attacker can exploit a vulnerability in the AbstractIoBuffer.resolveClass() method, specifically when IoBuffer.getObject() is called, to bypass the classname allowlist. This bypass allows for the execution of arbitrary code, potentially leading to full system compromise."], "name": "CVE-2026-42779", "package_state": [{"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Affected", "package_name": "jenkins", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Affected", "package_name": "jenkins-2-plugins", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Affected", "package_name": "ocp-tools-4/jenkins-rhel8", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:ocp_tools", "fix_state": "Affected", "package_name": "ocp-tools-4/jenkins-rhel9", "product_name": "OpenShift Developer Tools and Services"}, {"cpe": "cpe:/a:redhat:amq_broker:7", "fix_state": "Not affected", "package_name": "mina-core", "product_name": "Red Hat AMQ Broker 7"}, {"cpe": "cpe:/a:redhat:camel_spring_boot:4", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat build of Apache Camel for Spring Boot 4"}, {"cpe": "cpe:/a:redhat:jboss_data_grid:8", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat Data Grid 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "javapackages-tools:201801/maven-wagon", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "maven:3.9/maven-wagon", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "maven-wagon", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:jboss_fuse:7", "fix_state": "Not affected", "package_name": "mina-core", "product_name": "Red Hat Fuse 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:7", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat JBoss Enterprise Application Platform 7"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_application_platform:8", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat JBoss Enterprise Application Platform 8"}, {"cpe": "cpe:/a:redhat:jbosseapxp", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat JBoss Enterprise Application Platform Expansion Pack"}, {"cpe": "cpe:/a:redhat:jboss_enterprise_bpms_platform:7", "fix_state": "Not affected", "package_name": "mina-core", "product_name": "Red Hat Process Automation 7"}, {"cpe": "cpe:/a:redhat:red_hat_single_sign_on:7", "fix_state": "Affected", "package_name": "mina-core", "product_name": "Red Hat Single Sign-On 7"}, {"cpe": "cpe:/a:redhat:amq_streams:2", "fix_state": "Not affected", "package_name": "mina-core", "product_name": "streams for Apache Kafka 2"}, {"cpe": "cpe:/a:redhat:amq_streams:3", "fix_state": "Not affected", "package_name": "mina-core", "product_name": "streams for Apache Kafka 3"}], "public_date": "2026-05-01T10:00:43Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-42779\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-42779\nhttps://lists.apache.org/thread/fhlx5k91hrkgyzh7yk1nghrn3k27gxy0"], "statement": "Red Hat products are affected by this vulnerability. However, the vulnerable code cannot be reached and therefore are not vulnerable. Due to this reason, this flaw has been rated with a low severity.", "threat_severity": "Low"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.2.X,2.2.6]"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[2.1.X,2.1.11]"}}], "enrichment": {"confidence": 100.0, "confidence_source": "manual", "scores": [{"score": 100.0, "source": "manual"}]}, "original": {"product": "Apache MINA", "source": "cna", "vendor": "Apache Software Foundation"}, "product": "mina", "vendor": "apache"}], "created": "2026-05-02T00:00:14.970929+00:00", "updated": "2026-05-03T21:32:42.289961+00:00", "vendors": ["apache", "apache$PRODUCT$mina"]}