{"answers":{"affected":"3 open source packages ship an affected version, including ai.h2o:h2o-core and h2o. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3960 exists.","fix":"Upgrade ai.h2o:h2o-core to 3.46.0.10 or later.","what":"CVE-2026-3960 is a medium-severity code injection vulnerability in h2oai/h2o-3, published on 23 Apr 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-2026-3960 and fix it if it is affected.\n\nWhat it is: CVE-2026-3960 is a medium-severity code injection vulnerability in h2oai/h2o-3, published on 23 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3960 exists.\n\nAffected packages and fixed versions:\n- ai.h2o:h2o-core (Maven): affected all versions; fixed in 3.46.0.10\n- ai.h2o:h2o-core (Maven): affected all versions; fixed in 3.46.0.10\n- h2o (PyPI): affected all versions; fixed in 3.46.0.10\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-2026-3960/ (Markdown: https://insights.sbomify.com/CVE-2026-3960/index.md)","id":"CVE-2026-3960","markdown":"https://insights.sbomify.com/CVE-2026-3960/index.md","name":"CVE-2026-3960","record":{"aliases":["GHSA-qmcv-hh7c-3m56","PYSEC-2026-2180"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"H2O-3 machine learning server","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code on H2O-3 servers by bypassing JDBC parameter blacklists via PostgreSQL driver exploitation.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntr_ai","cpe":[{"product":"h2o","vendor":"h2o"}],"cvss":{"score":5.9,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"A critical remote code execution vulnerability exists in the unauthenticated REST API endpoint /99/ImportSQLTable in H2O-3 version 3.46.0.9 and prior. The vulnerability arises due to insufficient security controls in the parameter blacklist mechanism, which only targets MySQL JDBC driver-specific dangerous parameters. An attacker can bypass these controls by switching the JDBC URL protocol to jdbc:postgresql: and exploiting PostgreSQL JDBC driver-specific parameters such as socketFactory and socketFactoryArg. This allows unauthenticated attackers to execute arbitrary code on the H2O-3 server with the privileges of the H2O-3 process. The issue is resolved in version 3.46.0.10.","ecosystems":["Maven","PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Remote Code Execution in h2oai/h2o-3","id":"CVE-2026-3960","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Maven","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"zyddnys manga-image-translator Translate Endpoints request_extraction.py to_pil_image server-side request forgery","id":"CVE-2026-3961"},"packages":[{"ecosystem":"Maven","fixed":["3.46.0.10"],"introduced":["0"],"last_affected":[],"package":"ai.h2o:h2o-core","purl":null,"source":"GHSA-qmcv-hh7c-3m56"},{"ecosystem":"Maven","fixed":["3.46.0.10"],"introduced":["0"],"last_affected":[],"package":"ai.h2o:h2o-core","purl":"pkg:maven/ai.h2o/h2o-core","source":"GHSA-qmcv-hh7c-3m56"},{"ecosystem":"PyPI","fixed":["3.46.0.10"],"introduced":["0"],"last_affected":[],"package":"h2o","purl":"pkg:pypi/h2o","source":"PYSEC-2026-2180"}],"prev":{"headline":"0xKoda WireMCP Tshark CLI index.js server.tool os command injection","id":"CVE-2026-3959"},"products":["h2oai/h2o-3"],"published":"2026-04-23","related":[{"cvss_score":10,"headline":"H2O Remote Code Execution via POJO Model Import","id":"CVE-2023-6016","kev_date_added":null,"published":"2023-11-16"},{"cvss_score":9.8,"headline":"Deserialization Vulnerability in h2oai/h2o-3","id":"CVE-2025-6544","kev_date_added":null,"published":"2025-09-21"},{"cvss_score":9.8,"headline":"Jdbc Deserialization in h2oai/h2o-3","id":"CVE-2024-10553","kev_date_added":null,"published":"2025-03-20"},{"cvss_score":9.3,"headline":"External Control of File Name or Path in h2oai/h2o-3","id":"CVE-2023-6569","kev_date_added":null,"published":"2023-12-14"},{"cvss_score":9.3,"headline":"H2O Local File Include","id":"CVE-2023-6013","kev_date_added":null,"published":"2023-11-16"},{"cvss_score":9.3,"headline":"Local File Inclusion in h2oai/h2o-3","id":"CVE-2023-6038","kev_date_added":null,"published":"2023-11-16"},{"cvss_score":9.1,"headline":"H2O.ai H2O vulnerable to deserialization attacks via a JDBC Connection URL","id":"CVE-2024-45758","kev_date_added":null,"published":"2024-09-06"}],"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":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-04-23","vendors":["h2oai"]},"summary":"Unauthenticated attackers can execute arbitrary code on H2O-3 servers by bypassing JDBC parameter blacklists via PostgreSQL driver exploitation.","url":"https://insights.sbomify.com/CVE-2026-3960/"}