{"answers":{"affected":"8 open source packages ship an affected version, including Microsoft.OpenApi.Kiota and Microsoft.OpenApi.Kiota.Builder.","exploited":"There is no known exploitation of CVE-2026-59863 in the wild and no public exploit code.","fix":"Upgrade Microsoft.OpenApi.Kiota to a fixed version for your release line: 1.29.1 or 1.32.5.","what":"CVE-2026-59863 is a high-severity path traversal vulnerability in microsoft kiota, published on 16 Jul 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-2026-59863 and fix it if it is affected.\n\nWhat it is: CVE-2026-59863 is a high-severity path traversal vulnerability in microsoft kiota, published on 16 Jul 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-2026-59863 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.OpenApi.Kiota (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota (NuGet): affected from 1.30.0; fixed in 1.32.5\n- Microsoft.OpenApi.Kiota (NuGet): affected from 1.30.0; fixed in 1.32.5\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected all versions; fixed in 1.29.1\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected from 1.30.0; fixed in 1.32.5\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected from 1.30.0; fixed in 1.32.5\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-2026-59863/ (Markdown: https://insights.sbomify.com/CVE-2026-59863/index.md)","id":"CVE-2026-59863","markdown":"https://insights.sbomify.com/CVE-2026-59863/index.md","name":"CVE-2026-59863","record":{"aliases":["GHSA-4rj6-vrwv-wr8m"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenAPI code generator","requires_auth":"none","summary":"Attackers can write files outside the workspace via poisoned config, potentially leading to code execution on developer or CI hosts.","user_interaction":"required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Kiota is an OpenAPI based HTTP Client code generator. Prior to 1.29.1 and 1.32.5, Kiota honored a poisoned .kiota/workspace.json workspace configuration without validating per-client or per-plugin outputPath values during kiota client generate and kiota plugin generate, allowing a malicious repository or pull request to use absolute paths, rooted POSIX / paths, UNC \\\\ or // paths, Windows drive X:\\ paths, or .. traversal segments to write generated client files outside the workspace root on a developer or CI host. This issue is fixed in version 1.29.1 and 1.32.5.","ecosystems":["NuGet"],"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":"Kiota: Workspace-config poisoning: out-of-repo file write + generation-time SSRF","id":"CVE-2026-59863","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":8,"n_references":4,"next":{"headline":"Kiota: Path/URL injection into generated Copilot plugin manifest via x-ai-* extensions","id":"CVE-2026-59864"},"packages":[{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":null,"source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":"pkg:nuget/Microsoft.OpenApi.Kiota","source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.32.5"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":null,"source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.32.5"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":"pkg:nuget/Microsoft.OpenApi.Kiota","source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":null,"source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.29.1"],"introduced":["0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":"pkg:nuget/Microsoft.OpenApi.Kiota.Builder","source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.32.5"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":null,"source":"GHSA-4rj6-vrwv-wr8m"},{"ecosystem":"NuGet","fixed":["1.32.5"],"introduced":["1.30.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":"pkg:nuget/Microsoft.OpenApi.Kiota.Builder","source":"GHSA-4rj6-vrwv-wr8m"}],"prev":{"headline":"Kiota: Code Generation Literal Injection in the Python Generator","id":"CVE-2026-59862"},"products":["kiota"],"published":"2026-07-16","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":"2026-08-17","vendors":["microsoft"]},"summary":"Attackers can write files outside the workspace via poisoned config, potentially leading to code execution on developer or CI hosts.","url":"https://insights.sbomify.com/CVE-2026-59863/"}