{"answers":{"affected":"8 open source packages ship an affected version, including Microsoft.AspNetCore.Identity. It affects 3 products.","exploited":"There is no known exploitation of CVE-2018-8171 in the wild and no public exploit code.","fix":"Upgrade Microsoft.AspNetCore.Identity to a fixed version for your release line: 1.0.6, 1.1.6, 2.0.4 or 2.1.2.","what":"CVE-2018-8171 is a high-severity vulnerability in Microsoft ASP.NET, published on 11 Jul 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-8171 and fix it if it is affected.\n\nWhat it is: CVE-2018-8171 is a high-severity vulnerability in Microsoft ASP.NET, published on 11 Jul 2018. 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-2018-8171 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- Microsoft.AspNetCore.Identity (NuGet): affected from 1.0.0; fixed in 1.0.6\n- Microsoft.AspNetCore.Identity (NuGet): affected from 1.0.0; fixed in 1.0.6\n- Microsoft.AspNetCore.Identity (NuGet): affected from 1.1.0; fixed in 1.1.6\n- Microsoft.AspNetCore.Identity (NuGet): affected from 1.1.0; fixed in 1.1.6\n- Microsoft.AspNetCore.Identity (NuGet): affected from 2.0.0; fixed in 2.0.4\n- Microsoft.AspNetCore.Identity (NuGet): affected from 2.0.0; fixed in 2.0.4\n- Microsoft.AspNetCore.Identity (NuGet): affected from 2.1.0; fixed in 2.1.2\n- Microsoft.AspNetCore.Identity (NuGet): affected from 2.1.0; fixed in 2.1.2\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-2018-8171/ (Markdown: https://insights.sbomify.com/CVE-2018-8171/index.md)","id":"CVE-2018-8171","markdown":"https://insights.sbomify.com/CVE-2018-8171/index.md","name":"CVE-2018-8171","record":{"aliases":["GHSA-vhvh-528q-ff3p"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"ASP.NET framework","requires_auth":"none","summary":"Attackers can bypass account lockout mechanisms in ASP.NET applications by exploiting a lack of validation for incorrect login attempts.","user_interaction":"not_required","vuln_class":"security_feature_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"microsoft","cpe":[{"product":"asp.net_core","vendor":"microsoft"},{"product":"asp.net_model_view_controller","vendor":"microsoft"},{"product":"asp.net_webpages","vendor":"microsoft"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.0"},"cwes":[{"id":"CWE-287","name":"Improper Authentication"}],"description":"A Security Feature Bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated, aka \"ASP.NET Security Feature Bypass Vulnerability.\" This affects ASP.NET, ASP.NET Core 1.1, ASP.NET Core 1.0, ASP.NET Core 2.0, ASP.NET MVC 5.2.","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":"Security feature bypass vulnerability exists in ASP.NET when the number of incorrect login attempts is not validated","id":"CVE-2018-8171","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"security_feature_bypass","year":"2018"},"n_packages":8,"n_references":3,"next":{"headline":"Code injection in Expression Blend 4","id":"CVE-2018-8172"},"packages":[{"ecosystem":"NuGet","fixed":["1.0.6"],"introduced":["1.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":null,"source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["1.0.6"],"introduced":["1.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":"pkg:nuget/Microsoft.AspNetCore.Identity","source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["1.1.6"],"introduced":["1.1.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":null,"source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["1.1.6"],"introduced":["1.1.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":"pkg:nuget/Microsoft.AspNetCore.Identity","source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["2.0.4"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":null,"source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["2.0.4"],"introduced":["2.0.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":"pkg:nuget/Microsoft.AspNetCore.Identity","source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["2.1.2"],"introduced":["2.1.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":null,"source":"GHSA-vhvh-528q-ff3p"},{"ecosystem":"NuGet","fixed":["2.1.2"],"introduced":["2.1.0"],"last_affected":[],"package":"Microsoft.AspNetCore.Identity","purl":"pkg:nuget/Microsoft.AspNetCore.Identity","source":"GHSA-vhvh-528q-ff3p"}],"prev":{"headline":"Privilege escalation in Windows 10","id":"CVE-2018-8170"},"products":["ASP.NET","ASP.NET Core","ASP.NET MVC 5.2"],"published":"2018-07-11","related":[{"cvss_score":9.9,"headline":"ASP.NET Security Feature Bypass Vulnerability","id":"CVE-2025-55315","kev_date_added":null,"published":"2025-10-14"},{"cvss_score":9.4,"headline":"ASP.NET Core Tampering Vulnerability","id":"CVE-2026-88092","kev_date_added":null,"published":"2026-10-13"},{"cvss_score":9.1,"headline":"ASP.NET Core Elevation of Privilege Vulnerability","id":"CVE-2026-40372","kev_date_added":null,"published":"2026-04-21"},{"cvss_score":8.8,"headline":"ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability","id":"CVE-2021-43877","kev_date_added":null,"published":"2021-12-15"},{"cvss_score":8.8,"headline":"Remote code execution in ASP.NET Core","id":"CVE-2020-0603","kev_date_added":null,"published":"2020-01-14"},{"cvss_score":8.8,"headline":"Elevation of privilege in ASP.NET Core","id":"CVE-2019-1302","kev_date_added":null,"published":"2019-09-11"},{"cvss_score":8.8,"headline":"ASP.NET Core allow an elevation of privilege","id":"CVE-2018-0787","kev_date_added":null,"published":"2018-03-14"}],"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":"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["Microsoft"]},"summary":"Attackers can bypass account lockout mechanisms in ASP.NET applications by exploiting a lack of validation for incorrect login attempts.","url":"https://insights.sbomify.com/CVE-2018-8171/"}