{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2023-22921 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2023-22921 yet. Limit exposure of the affected software until one is available.","what":"CVE-2023-22921 is a high-severity cross-site scripting vulnerability in Zyxel NBG-418N v2 firmware, published on 1 May 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2023-22921 and fix it if it is affected.\n\nWhat it is: CVE-2023-22921 is a high-severity cross-site scripting vulnerability in Zyxel NBG-418N v2 firmware, published on 1 May 2023. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2023-22921 in the wild and no public exploit code.\n\nAffected product: Zyxel NBG-418N v2 firmware. 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-2023-22921/ (Markdown: https://insights.sbomify.com/CVE-2023-22921/index.md)","id":"CVE-2023-22921","markdown":"https://insights.sbomify.com/CVE-2023-22921/index.md","name":"CVE-2023-22921","record":{"aliases":["GHSA-8rhh-pq82-8f6m"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Zyxel router firmware","requires_auth":"high_privilege","summary":"An authenticated administrator can inject malicious scripts via the web interface, causing denial-of-service conditions on the Zyxel router.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Zyxel","cpe":[{"product":"nbg-418n_firmware","vendor":"zyxel"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:H","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"A cross-site scripting (XSS) vulnerability in the Zyxel NBG-418N v2 firmware versions prior to V1.00(AARP.14)C0 could allow a remote authenticated attacker with administrator privileges to store malicious scripts using a web management interface parameter, resulting in denial-of-service (DoS) conditions on an affected device.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"Cross-site scripting in NBG-418N v2 firmware","id":"CVE-2023-22921","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2023"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22922"},"packages":[],"prev":{"headline":"Misconfiguration in LTE3316-M604","id":"CVE-2023-22920"},"products":["NBG-418N v2 firmware"],"published":"2023-05-01","related":[{"cvss_score":8.8,"headline":"Cross-site request forgery in n/a","id":"CVE-2019-6710","kev_date_added":null,"published":"2019-03-07"},{"cvss_score":8.1,"headline":"Hardcoded credentials in n/a","id":"CVE-2015-7283","kev_date_added":null,"published":"2015-12-31"},{"cvss_score":7.5,"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22922","kev_date_added":null,"published":"2023-05-01"},{"cvss_score":6.5,"headline":"Other in NBG-418N v2 firmware","id":"CVE-2023-22923","kev_date_added":null,"published":"2023-05-01"},{"cvss_score":6.1,"headline":"Cross-site scripting in NBG-418N v2 firmware","id":"CVE-2022-45441","kev_date_added":null,"published":"2023-02-07"},{"cvss_score":4.9,"headline":"Memory corruption in NBG-418N v2 firmware","id":"CVE-2023-22924","kev_date_added":null,"published":"2023-05-01"}],"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":"2025-01-30","vendors":["Zyxel"]},"summary":"An authenticated administrator can inject malicious scripts via the web interface, causing denial-of-service conditions on the Zyxel router.","url":"https://insights.sbomify.com/CVE-2023-22921/"}