{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-28509 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-28509 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-28509 is a medium-severity cross-site scripting vulnerability in langbot-app LangBot, published on 6 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-28509 and fix it if it is affected.\n\nWhat it is: CVE-2026-28509 is a medium-severity cross-site scripting vulnerability in langbot-app LangBot, published on 6 Mar 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-28509 in the wild and no public exploit code.\n\nAffected product: langbot-app LangBot. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-28509/ (Markdown: https://insights.sbomify.com/CVE-2026-28509/index.md)","id":"CVE-2026-28509","markdown":"https://insights.sbomify.com/CVE-2026-28509/index.md","name":"CVE-2026-28509","record":{"aliases":["GHSA-w8gq-g4pc-xh3h"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"IM bot platform","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into the LangBot web UI via raw HTML rendering, potentially compromising user sessions or executing code.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"langbot","vendor":"langbot"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"LangBot is a global IM bot platform designed for LLMs. Prior to version 4.8.7, LangBot’s web UI renders user-supplied raw HTML using rehypeRaw, which can lead to a cross-site scripting (XSS) vulnerability. This issue has been patched in version 4.8.7.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":false,"headline":"LangBot has a Cross Site Scripting(XSS) Vulnerability","id":"CVE-2026-28509","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"elabftw allows MFA bypass during login","id":"CVE-2026-28510"},"packages":[],"prev":{"headline":"Idno: Unauthenticated SSRF via URL Unfurl Endpoint","id":"CVE-2026-28508"},"products":["LangBot"],"published":"2026-03-06","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-03-06","vendors":["langbot-app"]},"summary":"Attackers can inject malicious scripts into the LangBot web UI via raw HTML rendering, potentially compromising user sessions or executing code.","url":"https://insights.sbomify.com/CVE-2026-28509/"}