{"answers":{"affected":"4 open source packages ship an affected version, including Microsoft.OpenApi.Kiota and Microsoft.OpenApi.Kiota.Builder.","exploited":"There is no known exploitation of CVE-2026-105796 in the wild and no public exploit code.","fix":"Upgrade Microsoft.OpenApi.Kiota to 1.35.0 or later.","what":"CVE-2026-105796 is a high-severity code injection vulnerability in Microsoft.OpenApi.Kiota, published on 6 Oct 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-2026-105796 and fix it if it is affected.\n\nWhat it is: CVE-2026-105796 is a high-severity code injection vulnerability in Microsoft.OpenApi.Kiota, published on 6 Oct 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-2026-105796 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.OpenApi.Kiota (NuGet): affected from 0.5.0; fixed in 1.35.0\n- Microsoft.OpenApi.Kiota (NuGet): affected from 0.5.0; fixed in 1.35.0\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected from 0.5.0; fixed in 1.35.0\n- Microsoft.OpenApi.Kiota.Builder (NuGet): affected from 0.5.0; fixed in 1.35.0\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-2026-105796/ (Markdown: https://insights.sbomify.com/CVE-2026-105796/index.md)","id":"CVE-2026-105796","markdown":"https://insights.sbomify.com/CVE-2026-105796/index.md","name":"CVE-2026-105796","record":{"aliases":["GHSA-rm89-rhwj-9j92"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"OpenAPI code generator","requires_auth":"none","summary":"Attackers can inject malicious code into generated Java or PHP clients via crafted OpenAPI descriptions, leading to code execution in the consuming application.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.8,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"}],"description":"Kiota is an OpenAPI based HTTP Client code generator. From 0.5.0 until 1.35.0, Kiota's Java and PHP documentation-comment sanitizers delete block-comment terminators rather than neutralizing them, allowing overlapping characters to reform a terminator and place attacker-controlled OpenAPI text outside a generated documentation comment. The Java sanitizer also removes non-ASCII characters after deleting terminators, which can create a new terminator during normalization. Exploitation requires a developer or build pipeline to generate source from the malicious description and then compile and load the Java output or load the PHP output, after which injected code executes in the consuming application or build environment context. The version range is based on the Java defect and does not assert that PHP generation existed in every affected release. This issue is fixed in version 1.35.0.","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: Code injection through doc-comment delimiter reformation in Kiota Java and PHP generators","id":"CVE-2026-105796","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Command injection in simplechat","id":"CVE-2026-105797"},"packages":[{"ecosystem":"NuGet","fixed":["1.35.0"],"introduced":["0.5.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":null,"source":"GHSA-rm89-rhwj-9j92"},{"ecosystem":"NuGet","fixed":["1.35.0"],"introduced":["0.5.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota","purl":"pkg:nuget/Microsoft.OpenApi.Kiota","source":"GHSA-rm89-rhwj-9j92"},{"ecosystem":"NuGet","fixed":["1.35.0"],"introduced":["0.5.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":null,"source":"GHSA-rm89-rhwj-9j92"},{"ecosystem":"NuGet","fixed":["1.35.0"],"introduced":["0.5.0"],"last_affected":[],"package":"Microsoft.OpenApi.Kiota.Builder","purl":"pkg:nuget/Microsoft.OpenApi.Kiota.Builder","source":"GHSA-rm89-rhwj-9j92"}],"prev":{"headline":"Kiota: Unsafe oauth_card_path references in Kiota-generated API plugin manifests","id":"CVE-2026-105795"},"products":["Microsoft.OpenApi.Kiota","Microsoft.OpenApi.Kiota.Builder","kiota"],"published":"2026-10-06","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":"total"},"state":"PUBLISHED","updated":"2026-10-09","vendors":["microsoft"]},"summary":"Attackers can inject malicious code into generated Java or PHP clients via crafted OpenAPI descriptions, leading to code execution in the consuming application.","url":"https://insights.sbomify.com/CVE-2026-105796/"}