{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-4403 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-4403 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-4403 is a medium-severity vulnerability in timvaniersel Remove Schema, published on 1 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-2021-4403 and fix it if it is affected.\n\nWhat it is: CVE-2021-4403 is a medium-severity vulnerability in timvaniersel Remove Schema, published on 1 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-2021-4403 in the wild and no public exploit code.\n\nAffected product: timvaniersel Remove Schema. 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-2021-4403/ (Markdown: https://insights.sbomify.com/CVE-2021-4403/index.md)","id":"CVE-2021-4403","markdown":"https://insights.sbomify.com/CVE-2021-4403/index.md","name":"CVE-2021-4403","record":{"aliases":["GHSA-vwj2-v47j-h734"],"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 modify plugin settings by tricking administrators into clicking a link due to missing nonce validation.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"Wordfence","cpe":[{"product":"remove_schema","vendor":"websitescanner"}],"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 Remove Schema plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 1.5. This is due to missing or incorrect nonce validation on the validate() function. This makes it possible for unauthenticated attackers to modify the plugins settings 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":"Remove Schema \u003c= 1.5 - Cross-Site Request Forgery Bypass","id":"CVE-2021-4403","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"csrf","year":"2021"},"n_packages":0,"n_references":9,"next":{"headline":"Event Espresso 4 Decaf \u003c= 4.10.11 - Cross-Site Request Forgery Bypass","id":"CVE-2021-4404"},"packages":[],"prev":{"headline":"Multiple Roles \u003c= 1.3.1- Cross-Site Request Forgery Bypass","id":"CVE-2021-4402"},"products":["Remove Schema"],"published":"2023-07-01","related":[],"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":["timvaniersel"]},"summary":"Unauthenticated attackers can modify plugin settings by tricking administrators into clicking a link due to missing nonce validation.","url":"https://insights.sbomify.com/CVE-2021-4403/"}