{"answers":{"affected":"8 open source packages ship an affected version, including org.mariadb.jdbc:mariadb-java-client.","exploited":"There is no known exploitation of CVE-2026-55856 in the wild and no public exploit code.","fix":"Upgrade org.mariadb.jdbc:mariadb-java-client to a fixed version for your release line: 2.7.14, 3.3.5, 3.4.3 or 3.5.9.","what":"CVE-2026-55856 is a medium-severity vulnerability in mariadb-corporation mariadb-connector-j, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55856 and fix it if it is affected.\n\nWhat it is: CVE-2026-55856 is a medium-severity vulnerability in mariadb-corporation mariadb-connector-j, published on 28 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-55856 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected all versions; fixed in 2.7.14\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected all versions; fixed in 2.7.14\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.0.0; fixed in 3.3.5\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.0.0; fixed in 3.3.5\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.4.0; fixed in 3.4.3\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.4.0; fixed in 3.4.3\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.5.0; fixed in 3.5.9\n- org.mariadb.jdbc:mariadb-java-client (Maven): affected from 3.5.0; fixed in 3.5.9\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55856/ (Markdown: https://insights.sbomify.com/CVE-2026-55856/index.md)","id":"CVE-2026-55856","markdown":"https://insights.sbomify.com/CVE-2026-55856/index.md","name":"CVE-2026-55856","record":{"aliases":["CLEANSTART-2026-EO42175","CLEANSTART-2026-MO09576","CLEANSTART-2026-WK92000","CLEANSTART-2026-YJ93143","ECHO-b9d6-8b57-95e5","GHSA-g9jj-cgmh-9f38","MINI-3g6h-r8qp-ff7r","MINI-4m78-3w26-qx5g","MINI-5h3x-prm3-pm9p","MINI-5hqm-j3rx-fq2v","MINI-732r-8pp4-p79w","MINI-8jmm-qmv4-q2mh","MINI-f4cc-9pp7-qj9h","MINI-f9ff-4xfx-44r4","MINI-frpg-f8vm-4vrj","MINI-jc9r-h63f-h825","MINI-m4x6-4pcf-55h4","MINI-pfwf-932w-rjwj","MINI-r2mp-v37c-hhcv","MINI-rqw9-22wh-f5v7","MINI-vvxf-ggrw-qfxf"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","security_bypass"],"network_reachable":"yes","non_default_config":true,"product_category":"MariaDB Java connector","requires_auth":"none","summary":"An active man-in-the-middle can steal database passwords during the initial handshake if specific SSL verification settings are used without explicit trust store configuration.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-522","name":"Insufficiently Protected Credentials"}],"description":"MariaDB Connector/J is used to connect applications developed in Java to MariaDB and MySQL databases. Prior to 2.7.14, 3.3.5, 3.4.3, and 3.5.9, when a Java application connects with sslMode=verify-full or sslMode=verify-ca, supplies a password, and does not configure serverSslCert or trustStore, Connector/J can accept an untrusted self-signed certificate through the fallbackToSystemTrustStore=true ephemeral trust manager and record its certFingerprint for later identity binding. The OK-packet and authentication-switch paths enforce the certificate fingerprint, but the initial-handshake path does not. HandshakeResponse.encode() can therefore build and send a mysql_clear_password response before checking certFingerprint != null \u0026\u0026 !isMitMProof(), sslMode, or whether the authentication plugin is resistant to a man-in-the-middle, and the initial path also bypasses restrictedAuth. An active man-in-the-middle or hostile server can present a self-signed certificate, claim to be MariaDB, select mysql_clear_password as the initial authentication plugin, and receive the full database password before the connection is rejected. This issue is fixed in versions 2.7.14, 3.3.5, 3.4.3, and 3.5.9.","ecosystems":["Maven"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"MariaDB Connector/J: Cleartext password disclosure to a MITM on the initial-handshake","id":"CVE-2026-55856","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"information_disclosure","year":"2026"},"n_packages":8,"n_references":7,"next":{"headline":"MariaDB Connector/J: Cleartext Transmission of Sensitive Information and Insufficiently Protected Credentials","id":"CVE-2026-55857"},"packages":[{"ecosystem":"Maven","fixed":["2.7.14"],"introduced":["0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":null,"source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["2.7.14"],"introduced":["0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":"pkg:maven/org.mariadb.jdbc/mariadb-java-client","source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.3.5"],"introduced":["3.0.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":null,"source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.3.5"],"introduced":["3.0.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":"pkg:maven/org.mariadb.jdbc/mariadb-java-client","source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.4.3"],"introduced":["3.4.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":null,"source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.4.3"],"introduced":["3.4.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":"pkg:maven/org.mariadb.jdbc/mariadb-java-client","source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.5.9"],"introduced":["3.5.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":null,"source":"GHSA-g9jj-cgmh-9f38"},{"ecosystem":"Maven","fixed":["3.5.9"],"introduced":["3.5.0"],"last_affected":[],"package":"org.mariadb.jdbc:mariadb-java-client","purl":"pkg:maven/org.mariadb.jdbc/mariadb-java-client","source":"GHSA-g9jj-cgmh-9f38"}],"prev":{"headline":"MariaDB has possible SQL injection in Buffer parameter escaping under big5/gbk/sjis/cp932/gb18030 client charsets","id":"CVE-2026-55855"},"products":["mariadb-connector-j"],"published":"2026-08-28","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-31","vendors":["mariadb-corporation"]},"summary":"An active man-in-the-middle can steal database passwords during the initial handshake if specific SSL verification settings are used without explicit trust store configuration.","url":"https://insights.sbomify.com/CVE-2026-55856/"}