{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-61876 exists.","fix":"No fix has been published for CVE-2026-61876 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-61876 is a critical cross-site scripting vulnerability in openwrt luci, published on 12 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-61876 and fix it if it is affected.\n\nWhat it is: CVE-2026-61876 is a critical cross-site scripting vulnerability in openwrt luci, published on 12 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-61876 exists.\n\nAffected product: openwrt luci. 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-2026-61876/ (Markdown: https://insights.sbomify.com/CVE-2026-61876/index.md)","id":"CVE-2026-61876","markdown":"https://insights.sbomify.com/CVE-2026-61876/index.md","name":"CVE-2026-61876","record":{"aliases":["GHSA-8gvq-r3c7-vwmv"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["account_takeover","code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"OpenWrt LuCI","requires_auth":"none","summary":"Attackers can inject malicious scripts via DHCPv6 hostnames, executing code in the administrator's browser when viewing lease tables.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.4,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"LuCI versions fail to properly encode DHCPv6 lease hostnames before rendering in status tables, allowing adjacent network attackers to inject HTML markup. Attackers can send a DHCPv6 Client FQDN containing script tags that execute in the administrator's browser when viewing DHCP lease pages.","ecosystems":[],"exploits":{"exploitdb":1,"first_seen":"2026-08-11","github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-08-11","kind":"exploitdb","ref":"52637","stars":null,"title":"LuCI DHCPv6 -  Lease Hostname Stored Cross-Site Scripting"}],"tier":"weaponised"},"has_fix":null,"headline":"LuCI DHCPv6 Lease Hostname Stored Cross-Site Scripting","id":"CVE-2026-61876","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Tycon Systems TPDIN-Monitor-WEB2 Missing Authentication for Critical Function","id":"CVE-2026-61884"},"packages":[],"prev":{"headline":"luci-app-upnp Stored XSS via UPnP Port Mapping Description","id":"CVE-2026-61875"},"products":["luci"],"published":"2026-07-12","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)"},{"class":"attribution","licence":"GPL-2.0-or-later","name":"Exploit-DB"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-14","vendors":["openwrt"]},"summary":"Attackers can inject malicious scripts via DHCPv6 hostnames, executing code in the administrator's browser when viewing lease tables.","url":"https://insights.sbomify.com/CVE-2026-61876/"}