CVE-2026-42778

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Here was the original issue description:</div><div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.11, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div></div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.110, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div><br>"}], "value": "The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\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\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade\n\n\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. 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Here was the original issue description:\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\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\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade\n\n\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.110, and 2.2.0 <= 2.2.6.\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\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade", "supportingMedia": [{"type": "text/html", "value": "<div>The fix for CVE-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:</div><div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.11, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div></div><div><br></div><div>The fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.</div><div><br></div><div>Affected versions are Apache MINA 2.1.0 &lt;= 2.1.110, and 2.2.0 &lt;= 2.2.6.</div><div><br></div><div>The problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.</div><div><br></div><div>Affected are applications using Apache MINA that call IoBuffer.getObject().</div><div><br></div><div>Applications using Apache MINA are advised to upgrade</div><br>", "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": "2026-05-01T10:01:10.081Z"}}}, "cveMetadata": {"cveId": "CVE-2026-42778", "state": "PUBLISHED", "dateUpdated": "2026-05-02T03:55:26.868Z", "dateReserved": "2026-04-29T13:31:49.189Z", "assignerOrgId": "f0158376-9dc2-43b6-827c-5f631a4d8d09", "datePublished": "2026-05-01T10:01:10.081Z", "assignerShortName": "apache"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"collectionURL": "https://repo.maven.apache.org/maven2/org/apache/mina/", "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-2026-41409 was not applied to the 2.1.X and 2.2.X branches. Here was the original issue description:\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\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\nThe problem is resolved in Apache MINA 2.1.12, and 2.2.7 by \napplying the classname allowlist earlier.\n\n\n\n\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade\n\n\n\n\n\n\nThe fix for CVE-2024-52046 in Apache MINA AbstractIoBuffer.getObject() was incomplete. The classname allowlist of classes allowed to be deserialized was applied too late after a static initializer in a class to be read might already have been executed.\n\n\n\n\nAffected versions are Apache MINA 2.1.0 <= 2.1.110, and 2.2.0 <= 2.2.6.\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\nAffected are applications using Apache MINA that call IoBuffer.getObject().\n\n\n\n\nApplications using Apache MINA are advised to upgrade"}, {"lang": "es", "value": "La soluci\u00f3n para CVE-2026-41409 no se aplic\u00f3 a las ramas 2.1.X y 2.2.X. Aqu\u00ed estaba la descripci\u00f3n original del problema:\n\nLa soluci\u00f3n para CVE-2024-52046 en Apache MINA AbstractIoBuffer.getObject() fue incompleta. La lista de permitidos de nombres de clase de clases permitidas para ser deserializadas se aplic\u00f3 demasiado tarde despu\u00e9s de que un inicializador est\u00e1tico en una clase a ser le\u00edda ya podr\u00eda haberse ejecutado.\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 al aplicar 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\n\nLa soluci\u00f3n para CVE-2024-52046 en Apache MINA AbstractIoBuffer.getObject() fue incompleta. La lista de permitidos de nombres de clase de clases permitidas para ser deserializadas se aplic\u00f3 demasiado tarde despu\u00e9s de que un inicializador est\u00e1tico en una clase a ser le\u00edda ya podr\u00eda haberse ejecutado.\n\nLas versiones afectadas son Apache MINA 2.1.0 menor o igual que 2.1.110, 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 al aplicar 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-2026-42778", "lastModified": "2026-10-26T21:10:00.170", "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-2026-42778", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-05-01T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-05-01T11:16:19.383", "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: deserialization of untrusted data (incomplete fix for CVE-2026-41409)", "id": "2464321", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2464321"}, "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 incomplete fix for a deserialization issue in the `AbstractIoBuffer.getObject()` method allowed a static initializer in a class to be executed before the classname allowlist was applied. This vulnerability allows a remote attacker to execute arbitrary code in applications calling the `IoBuffer.getObject()` method."], "name": "CVE-2026-42778", "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": "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": "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": "2026-05-01T10:01:10Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-42778\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-42778\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": "2026-05-02T00:00:14.970604+00:00", "updated": "2026-05-03T21:32:41.069181+00:00", "vendors": ["apache", "apache$PRODUCT$mina"]}