{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-49131 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-49131 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-49131 is a medium-severity cross-site scripting vulnerability in Deciso B.V. OPNsense, published on 3 Aug 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-2026-49131 and fix it if it is affected.\n\nWhat it is: CVE-2026-49131 is a medium-severity cross-site scripting vulnerability in Deciso B.V. OPNsense, published on 3 Aug 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-2026-49131 in the wild and no public exploit code.\n\nAffected product: Deciso B.V. OPNsense. 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-2026-49131/ (Markdown: https://insights.sbomify.com/CVE-2026-49131/index.md)","id":"CVE-2026-49131","markdown":"https://insights.sbomify.com/CVE-2026-49131/index.md","name":"CVE-2026-49131","record":{"aliases":["GHSA-2wfc-8j3p-p6cp"],"analysis":{"component_type":"operating_system","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"OPNsense firewall OS","requires_auth":"low_privilege","summary":"Authenticated attackers can inject scripts into firewall rule descriptions, leading to session hijacking or credential theft for other users.","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:L/UI:P/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":"OPNsense before 26.1.9 contains a stored cross-site scripting vulnerability that allows authenticated attackers with firewall rule management privileges to inject arbitrary HTML or JavaScript by embedding payloads in the firewall rule description field via the filter API endpoint. The unsanitized description value is persisted and later rendered through the default cell formatter in opnsense_bootgrid.js, which assigns raw cell content to innerHTML, causing injected scripts to execute in the browser of any authenticated user who views the Firewall Rules page, enabling session hijacking or credential theft.","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":"OPNsense \u003c 26.1.9 Stored XSS via Firewall Rule Description Field","id":"CVE-2026-49131","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"OPNsense \u003c 26.1.9 Stored XSS via Certificate Description Field","id":"CVE-2026-49132"},"packages":[],"prev":{"headline":"Music Player Daemon \u003c 0.24.11 CRLF Injection via XspfPlaylistPlugin.cxx","id":"CVE-2026-49130"},"products":["OPNsense"],"published":"2026-08-03","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":["Deciso B.V."]},"summary":"Authenticated attackers can inject scripts into firewall rule descriptions, leading to session hijacking or credential theft for other users.","url":"https://insights.sbomify.com/CVE-2026-49131/"}