{"answers":{"affected":"4 open source packages ship an affected version, including org.apache.activemq:artemis-server and org.apache.artemis:artemis-server. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-27446 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-27446 is a critical authentication bypass vulnerability in Apache ActiveMQ Artemis, published on 4 Mar 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-2026-27446 and fix it if it is affected.\n\nWhat it is: CVE-2026-27446 is a critical authentication bypass vulnerability in Apache ActiveMQ Artemis, published on 4 Mar 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-2026-27446 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- org.apache.activemq:artemis-server (Maven): affected from 2.11.0 up to 2.44.0; no fix listed\n- org.apache.activemq:artemis-server (Maven): affected from 2.11.0 up to 2.44.0; no fix listed\n- org.apache.artemis:artemis-server (Maven): affected from 2.50.0; fixed in 2.52.0\n- org.apache.artemis:artemis-server (Maven): affected from 2.50.0; fixed in 2.52.0\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-2026-27446/ (Markdown: https://insights.sbomify.com/CVE-2026-27446/index.md)","id":"CVE-2026-27446","markdown":"https://insights.sbomify.com/CVE-2026-27446/index.md","name":"CVE-2026-27446","record":{"aliases":["CLSA-2026-1782176242","ECHO-2eda-feb8-1153","GHSA-fw88-pf9m-p947","ROOT-APP-MAVEN-CVE-2026-27446","UBUNTU-CVE-2026-27446"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":true,"product_category":"Apache ActiveMQ Artemis","requires_auth":"none","summary":"Unauthenticated attackers can force broker federation to exfiltrate or inject messages if Core protocol connections are allowed from untrusted sources.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"apache","cpe":[{"product":"artemis","vendor":"apache"}],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:L/SI:L/SA:L","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"Missing Authentication for Critical Function (CWE-306) vulnerability in Apache Artemis, Apache ActiveMQ Artemis. An unauthenticated remote attacker can use the Core protocol to force a target broker to establish an outbound Core federation connection to an attacker-controlled rogue broker. This could potentially result in message injection into any queue and/or message exfiltration from any queue via the rogue broker. This impacts environments that allow both:\n\n- incoming Core protocol connections from untrusted sources to the broker\n\n- outgoing Core protocol connections from the broker to untrusted targets\n\nThis issue affects:\n\n- Apache Artemis from 2.50.0 through 2.51.0\n\n- Apache ActiveMQ Artemis from 2.11.0 through 2.44.0.\n\nUsers are recommended to upgrade to Apache Artemis version 2.52.0, which fixes the issue.\n\nThe issue can be mitigated by one of the following:\n\n- Remove Core protocol support from any acceptor receiving connections from untrusted sources. Incoming Core protocol connections are supported by default via the \"artemis\" acceptor listening on port 61616. See the \"protocols\" URL parameter configured for the acceptor. An acceptor URL without this parameter supports all protocols by default, including Core.\n\n- Use two-way SSL (i.e. certificate-based authentication) in order to force every client to present the proper SSL certificate when establishing a connection before any message protocol handshake is attempted. This will prevent unauthenticated exploitation of this vulnerability.\n\n- Implement and deploy a Core interceptor to deny all Core downstream federation connect packets. Such packets have a type of (int) -16 or (byte) 0xfffffff0. Documentation for interceptors is available at  https://artemis.apache.org/components/artemis/documentation/latest/intercepting-operations.html .","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":"Apache Artemis, Apache ActiveMQ Artemis: Auth bypass for Core downstream federation","id":"CVE-2026-27446","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"OpenPrinting CUPS: Authorization bypass via case-insensitive group-member lookup","id":"CVE-2026-27447"},"packages":[{"ecosystem":"Maven","fixed":[],"introduced":["2.11.0"],"last_affected":["2.44.0"],"package":"org.apache.activemq:artemis-server","purl":null,"source":"GHSA-fw88-pf9m-p947"},{"ecosystem":"Maven","fixed":[],"introduced":["2.11.0"],"last_affected":["2.44.0"],"package":"org.apache.activemq:artemis-server","purl":"pkg:maven/org.apache.activemq/artemis-server","source":"GHSA-fw88-pf9m-p947"},{"ecosystem":"Maven","fixed":["2.52.0"],"introduced":["2.50.0"],"last_affected":[],"package":"org.apache.artemis:artemis-server","purl":null,"source":"GHSA-fw88-pf9m-p947"},{"ecosystem":"Maven","fixed":["2.52.0"],"introduced":["2.50.0"],"last_affected":[],"package":"org.apache.artemis:artemis-server","purl":"pkg:maven/org.apache.artemis/artemis-server","source":"GHSA-fw88-pf9m-p947"}],"prev":{"headline":"PGP Signature Reflection","id":"CVE-2026-27445"},"products":["Apache ActiveMQ Artemis","Apache Artemis"],"published":"2026-03-04","related":[{"cvss_score":9.8,"headline":"Apache Artemis, Apache ActiveMQ Artemis: Missing authentication on CORE protocol session reattachment","id":"CVE-2026-57967","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":9.1,"headline":"Information disclosure in Apache ActiveMQ Artemis","id":"CVE-2026-49364","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":9.1,"headline":"Missing authorization in Apache ActiveMQ Artemis","id":"CVE-2026-67593","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":8.8,"headline":"Apache ActiveMQ Artemis: Authenticated users could perform RCE via Jolokia MBeans","id":"CVE-2023-50780","kev_date_added":null,"published":"2024-10-14"},{"cvss_score":7.5,"headline":"Missing authorization in Apache ActiveMQ Artemis","id":"CVE-2026-49362","kev_date_added":null,"published":"2026-09-10"},{"cvss_score":7.5,"headline":"Information disclosure in Apache ActiveMQ Artemis","id":"CVE-2026-49363","kev_date_added":null,"published":"2026-09-10"}],"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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-18","vendors":["Apache Software Foundation"]},"summary":"Unauthenticated attackers can force broker federation to exfiltrate or inject messages if Core protocol connections are allowed from untrusted sources.","url":"https://insights.sbomify.com/CVE-2026-27446/"}