{"answers":{"affected":"4 open source packages ship an affected version, including ray and ve-ray. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-41486 in the wild and no public exploit code.","fix":"Upgrade ray to 2.55.0 or later.","what":"CVE-2026-41486 is a high-severity unsafe deserialization vulnerability in ray-project ray, published on 8 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-41486 and fix it if it is affected.\n\nWhat it is: CVE-2026-41486 is a high-severity unsafe deserialization vulnerability in ray-project ray, published on 8 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-41486 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ray (PyPI): affected all versions up to 2.54.0; no fix listed\n- ray (PyPI): affected from 2.49.0; fixed in 2.55.0\n- ray (PyPI): affected from 2.49.0; fixed in 2.55.0\n- ve-ray (PyPI): affected all versions up to 2.54.0; no fix listed\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-2026-41486/ (Markdown: https://insights.sbomify.com/CVE-2026-41486/index.md)","id":"CVE-2026-41486","markdown":"https://insights.sbomify.com/CVE-2026-41486/index.md","name":"CVE-2026-41486","record":{"aliases":["ECHO-e817-9967-6723","GHSA-mw35-8rx3-xf9r","MINI-pg3w-2mjx-wvqm","MINI-r4vv-2xhq-5x55","PYSEC-2026-2272","PYSEC-2026-2296"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Ray AI compute engine","requires_auth":"none","summary":"Attackers can achieve arbitrary code execution by tricking users into opening malicious Parquet files with Ray Data.","user_interaction":"required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"ray","vendor":"anyscale"}],"cvss":{"score":8.9,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Ray is an AI compute engine. From version 2.54.0 to before version 2.55.0, Ray Data registers custom Arrow extension types (ray.data.arrow_tensor, ray.data.arrow_tensor_v2, ray.data.arrow_variable_shaped_tensor) globally in PyArrow. When PyArrow reads a Parquet file containing one of these extension types, it calls __arrow_ext_deserialize__ on the field's metadata bytes. Ray's implementation passes these bytes directly to cloudpickle.loads(), achieving arbitrary code execution during schema parsing, before any row data is read. This issue has been patched in version 2.55.0.","ecosystems":["PyPI"],"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":"Ray: Remote Code Execution via Parquet Arrow Extension Type Deserialization","id":"CVE-2026-41486","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Missing authorization in langfuse","id":"CVE-2026-41487"},"packages":[{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["2.54.0"],"package":"ray","purl":"pkg:pypi/ray","source":"PYSEC-2026-2272"},{"ecosystem":"PyPI","fixed":["2.55.0"],"introduced":["2.49.0"],"last_affected":[],"package":"ray","purl":null,"source":"GHSA-mw35-8rx3-xf9r"},{"ecosystem":"PyPI","fixed":["2.55.0"],"introduced":["2.49.0"],"last_affected":[],"package":"ray","purl":"pkg:pypi/ray","source":"GHSA-mw35-8rx3-xf9r"},{"ecosystem":"PyPI","fixed":[],"introduced":["0"],"last_affected":["2.54.0"],"package":"ve-ray","purl":"pkg:pypi/ve-ray","source":"PYSEC-2026-2296"}],"prev":{"headline":"Kyverno Controller Denial of Service via forEach Mutation Panic","id":"CVE-2026-41485"},"products":["ray"],"published":"2026-05-08","related":[{"cvss_score":9.4,"headline":"Ray-Project Ray Code Injection","id":"CVE-2025-62593","kev_date_added":"2026-08-17","published":"2025-11-26"},{"cvss_score":9.8,"headline":"Ray has arbitrary code execution via jobs submission API","id":"CVE-2023-48022","kev_date_added":null,"published":"2023-11-28"},{"cvss_score":9.1,"headline":"Server-side request forgery in n/a","id":"CVE-2023-48023","kev_date_added":null,"published":"2023-11-28"},{"cvss_score":8.7,"headline":"Ray Dashboard \u003c= 2.8.0 Path Traversal Leading to Local File Disclosure","id":"CVE-2026-32981","kev_date_added":null,"published":"2026-03-17"},{"cvss_score":8.6,"headline":"Ray \u003c 2.56.0 Unsafe Deserialization RCE via WebDataset Reader","id":"CVE-2026-57516","kev_date_added":null,"published":"2026-07-01"},{"cvss_score":5.9,"headline":"Ray: Dashboard DELETE endpoints allow unauthenticated browser-triggered DoS (Serve shutdown / job deletion)","id":"CVE-2026-27482","kev_date_added":null,"published":"2026-02-21"}],"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":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-12","vendors":["ray-project"]},"summary":"Attackers can achieve arbitrary code execution by tricking users into opening malicious Parquet files with Ray Data.","url":"https://insights.sbomify.com/CVE-2026-41486/"}