{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-48550 in the wild and no public exploit code.","fix":"Upgrade to a fixed version.","what":"CVE-2026-48550 is a medium-severity cross-site scripting vulnerability in Nagios Core, published on 12 Aug 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-2026-48550 and fix it if it is affected.\n\nWhat it is: CVE-2026-48550 is a medium-severity cross-site scripting vulnerability in Nagios Core, published on 12 Aug 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-2026-48550 in the wild and no public exploit code.\n\nAffected product: Nagios Core. 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-2026-48550/ (Markdown: https://insights.sbomify.com/CVE-2026-48550/index.md)","id":"CVE-2026-48550","markdown":"https://insights.sbomify.com/CVE-2026-48550/index.md","name":"CVE-2026-48550","record":{"aliases":["DEBIAN-CVE-2026-48550","GHSA-hc96-98mh-7j3h","UBUNTU-CVE-2026-48550"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Nagios monitoring system","requires_auth":"none","summary":"An unauthenticated attacker can execute arbitrary JavaScript in an authenticated user's browser via a crafted link in Nagios Core or XI.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Nagios Core before 4.5.14 and Nagios XI before 2026R1.7 are vulnerable to reflected cross-site scripting in cmd.cgi via the NagFormId parameter. An unauthenticated remote attacker can craft a malicious link that, when followed by an authenticated user, executes arbitrary JavaScript in the victim's browser.","ecosystems":[],"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":"Nagios Core / XI cmd.cgi Reflected XSS via NagFormId Parameter","id":"CVE-2026-48550","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Nagios Core / XI CSRF Protection Bypass via Double-Submit Cookie","id":"CVE-2026-48551"},"packages":[],"prev":{"headline":"Nagios Core / XI CSRF via cmd.cgi Double-Submit Cookie","id":"CVE-2026-48549"},"products":["Nagios Core","Nagios XI"],"published":"2026-08-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-08-14","vendors":["Nagios Enterprises, LLC."]},"summary":"An unauthenticated attacker can execute arbitrary JavaScript in an authenticated user's browser via a crafted link in Nagios Core or XI.","url":"https://insights.sbomify.com/CVE-2026-48550/"}