{"answers":{"affected":"4 open source packages ship an affected version, including HtmlSanitizer. It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-44390 in the wild and no public exploit code.","fix":"Upgrade HtmlSanitizer to a fixed version for your release line: 8.0.723 or 8.1.722-beta.","what":"CVE-2023-44390 is a medium-severity cross-site scripting vulnerability in mganss HtmlSanitizer, published on 5 Oct 2023. 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-2023-44390 and fix it if it is affected.\n\nWhat it is: CVE-2023-44390 is a medium-severity cross-site scripting vulnerability in mganss HtmlSanitizer, published on 5 Oct 2023. 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-2023-44390 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- HtmlSanitizer (NuGet): affected all versions; fixed in 8.0.723\n- HtmlSanitizer (NuGet): affected all versions; fixed in 8.0.723\n- HtmlSanitizer (NuGet): affected from 8.1.0-beta; fixed in 8.1.722-beta\n- HtmlSanitizer (NuGet): affected from 8.1.0-beta; fixed in 8.1.722-beta\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-2023-44390/ (Markdown: https://insights.sbomify.com/CVE-2023-44390/index.md)","id":"CVE-2023-44390","markdown":"https://insights.sbomify.com/CVE-2023-44390/index.md","name":"CVE-2023-44390","record":{"aliases":["GHSA-43cp-6p3q-2pc4"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":true,"product_category":"HTML sanitization library","requires_auth":"none","summary":"Attackers can bypass sanitization and inject JavaScript if foreign content like SVG or Math is explicitly allowed in the configuration.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"htmlsanitizer","vendor":"htmlsanitizer_project"}],"cvss":{"score":6.1,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. The vulnerability occurs in configurations where foreign content is allowed, i.e. either `svg` or `math` are in the list of allowed elements. In the case an application sanitizes user input with a vulnerable configuration, an attacker could bypass the sanitization and inject arbitrary HTML, including JavaScript code. Note that in the default configuration the vulnerability is not present. The vulnerability has been fixed in versions 8.0.723 and 8.1.722-beta (preview version).","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":"HtmlSanitizer vulnerable to Cross-site Scripting in Foreign Content","id":"CVE-2023-44390","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"NuGet","product":null,"products":[],"type":"xss","year":"2023"},"n_packages":4,"n_references":2,"next":{"headline":"Prevent unauthorized access to summary details in Discourse","id":"CVE-2023-44391"},"packages":[{"ecosystem":"NuGet","fixed":["8.0.723"],"introduced":["0"],"last_affected":[],"package":"HtmlSanitizer","purl":null,"source":"GHSA-43cp-6p3q-2pc4"},{"ecosystem":"NuGet","fixed":["8.0.723"],"introduced":["0"],"last_affected":[],"package":"HtmlSanitizer","purl":"pkg:nuget/HtmlSanitizer","source":"GHSA-43cp-6p3q-2pc4"},{"ecosystem":"NuGet","fixed":["8.1.722-beta"],"introduced":["8.1.0-beta"],"last_affected":[],"package":"HtmlSanitizer","purl":null,"source":"GHSA-43cp-6p3q-2pc4"},{"ecosystem":"NuGet","fixed":["8.1.722-beta"],"introduced":["8.1.0-beta"],"last_affected":[],"package":"HtmlSanitizer","purl":"pkg:nuget/HtmlSanitizer","source":"GHSA-43cp-6p3q-2pc4"}],"prev":{"headline":"Zope management interface vulnerable to stored cross site scripting via the title property","id":"CVE-2023-44389"},"products":["HtmlSanitizer"],"published":"2023-10-05","related":[{"cvss_score":6.3,"headline":"HtmlSanitizer has a bypass via template tag","id":"CVE-2026-25543","kev_date_added":null,"published":"2026-02-04"},{"cvss_score":6.1,"headline":"Possible XSS bypass if style tag is allowed","id":"CVE-2020-26293","kev_date_added":null,"published":"2021-01-04"}],"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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2024-09-19","vendors":["mganss"]},"summary":"Attackers can bypass sanitization and inject JavaScript if foreign content like SVG or Math is explicitly allowed in the configuration.","url":"https://insights.sbomify.com/CVE-2023-44390/"}