{"answers":{"affected":"3 open source packages ship an affected version, including azure-ai-language-conversations-authoring. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-21531 in the wild and no public exploit code.","fix":"Upgrade azure-ai-language-conversations-authoring to 1.0.0b4 or later.","what":"CVE-2026-21531 is a critical unsafe deserialization vulnerability in Microsoft Azure AI Language Authoring, published on 10 Feb 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-2026-21531 and fix it if it is affected.\n\nWhat it is: CVE-2026-21531 is a critical unsafe deserialization vulnerability in Microsoft Azure AI Language Authoring, published on 10 Feb 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-2026-21531 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- azure-ai-language-conversations-authoring (PyPI): affected all versions; fixed in 1.0.0b4\n- azure-ai-language-conversations-authoring (PyPI): affected all versions; fixed in 1.0.0b4\n- azure-ai-language-conversations-authoring (PyPI): affected all versions; fixed in 1.0.0b4\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-2026-21531/ (Markdown: https://insights.sbomify.com/CVE-2026-21531/index.md)","id":"CVE-2026-21531","markdown":"https://insights.sbomify.com/CVE-2026-21531/index.md","name":"CVE-2026-21531","record":{"aliases":["GHSA-436v-jg82-p533","PYSEC-2026-289"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Azure AI Language SDK","requires_auth":"none","summary":"An attacker can execute arbitrary code remotely by exploiting unsafe deserialization in the Azure AI Language Authoring SDK.","user_interaction":"not_required","vuln_class":"deserialization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"azure_conversation_authoring_client_library","vendor":"microsoft"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","version":"3.1"},"cwes":[{"id":"CWE-502","name":"Deserialization of Untrusted Data"}],"description":"Deserialization of untrusted data in Azure SDK allows an unauthorized attacker to execute code over a network.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":"2026-02-11","github_poc":1,"max_poc_stars":2,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-02-11T20:07:21Z","kind":"github_poc","ref":"https://github.com/NetVanguard-cmd/CVE-2026-21531","stars":2,"title":null}],"tier":"poc_unverified"},"has_fix":true,"headline":"Azure SDK for Python Remote Code Execution Vulnerability","id":"CVE-2026-21531","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"deserialization","year":"2026"},"n_packages":3,"n_references":1,"next":{"headline":"Azure Function Information Disclosure Vulnerability","id":"CVE-2026-21532"},"packages":[{"ecosystem":"PyPI","fixed":["1.0.0b4"],"introduced":["0"],"last_affected":[],"package":"azure-ai-language-conversations-authoring","purl":null,"source":"GHSA-436v-jg82-p533"},{"ecosystem":"PyPI","fixed":["1.0.0b4"],"introduced":["0"],"last_affected":[],"package":"azure-ai-language-conversations-authoring","purl":"pkg:pypi/azure-ai-language-conversations-authoring","source":"GHSA-436v-jg82-p533"},{"ecosystem":"PyPI","fixed":["1.0.0b4"],"introduced":["0"],"last_affected":[],"package":"azure-ai-language-conversations-authoring","purl":"pkg:pypi/azure-ai-language-conversations-authoring","source":"PYSEC-2026-289"}],"prev":{"headline":"Windows Rich Text Edit Elevation of Privilege Vulnerability","id":"CVE-2026-21530"},"products":["Azure AI Language Authoring"],"published":"2026-02-10","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":"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-19","vendors":["Microsoft"]},"summary":"An attacker can execute arbitrary code remotely by exploiting unsafe deserialization in the Azure AI Language Authoring SDK.","url":"https://insights.sbomify.com/CVE-2026-21531/"}