{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-4407 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-4407 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-4407 is a medium-severity vulnerability in ghuger Custom Banners, published on 12 Jul 2023. 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-2021-4407 and fix it if it is affected.\n\nWhat it is: CVE-2021-4407 is a medium-severity vulnerability in ghuger Custom Banners, published on 12 Jul 2023. 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-2021-4407 in the wild and no public exploit code.\n\nAffected product: ghuger Custom Banners. 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-2021-4407/ (Markdown: https://insights.sbomify.com/CVE-2021-4407/index.md)","id":"CVE-2021-4407","markdown":"https://insights.sbomify.com/CVE-2021-4407/index.md","name":"CVE-2021-4407","record":{"aliases":["GHSA-xqgm-mm4x-rx9j"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"none","summary":"Unauthenticated attackers can trick administrators into saving custom fields via forged requests, allowing unauthorized data modification in the Custom Banners plugin.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[{"product":"custom_banners","vendor":"goldplugins"}],"cvss":{"score":4.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"The Custom Banners plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.2.2 This is due to missing or incorrect nonce validation on the saveCustomFields() function. This makes it possible for unauthenticated attackers to save custom fields via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.","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":"Custom Banners \u003c= 3.2.2 - Cross-Site Request Forgery Bypass","id":"CVE-2021-4407","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"csrf","year":"2021"},"n_packages":0,"n_references":9,"next":{"headline":"DW Question \u0026 Answer \u003c= 1.5.8 - Cross-Site Request Forgery Bypass","id":"CVE-2021-4408"},"packages":[],"prev":{"headline":"Authenticated Remote COmmand Execution as root in OSNEXUS QuantaStor version 6.0.0.355 and others","id":"CVE-2021-4406"},"products":["Custom Banners"],"published":"2023-07-12","related":[{"cvss_score":6.1,"headline":"Custom Banners \u003c= 3.3 - Reflected Cross-Site Scripting","id":"CVE-2024-8799","kev_date_added":null,"published":"2024-10-01"}],"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":"2026-04-08","vendors":["ghuger"]},"summary":"Unauthenticated attackers can trick administrators into saving custom fields via forged requests, allowing unauthorized data modification in the Custom Banners plugin.","url":"https://insights.sbomify.com/CVE-2021-4407/"}