{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3920 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-3920 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3920 is a medium-severity cross-site scripting vulnerability in getgrav/grav-plugin-admin, published on 19 Nov 2021. 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-2021-3920 and fix it if it is affected.\n\nWhat it is: CVE-2021-3920 is a medium-severity cross-site scripting vulnerability in getgrav/grav-plugin-admin, published on 19 Nov 2021. 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-2021-3920 in the wild and no public exploit code.\n\nAffected product: getgrav/grav-plugin-admin. 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-2021-3920/ (Markdown: https://insights.sbomify.com/CVE-2021-3920/index.md)","id":"CVE-2021-3920","markdown":"https://insights.sbomify.com/CVE-2021-3920/index.md","name":"CVE-2021-3920","record":{"aliases":["GHSA-86p4-m52q-r4qx"],"analysis":{"component_type":"cms_plugin","fix_type":"patch","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"Grav CMS plugin","requires_auth":"low_privilege","summary":"Stored XSS in Grav Admin plugin allows attackers to inject malicious scripts, potentially leading to session hijacking or code execution.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntrdev","cpe":[{"product":"grav-plugin-admin","vendor":"getgrav"}],"cvss":{"score":4.6,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N","version":"3.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"grav-plugin-admin is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')","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":"Cross-site Scripting (XSS) - Stored in getgrav/grav-plugin-admin","id":"CVE-2021-3920","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"Cross-Site Request Forgery (CSRF) in firefly-iii/firefly-iii","id":"CVE-2021-3921"},"packages":[],"prev":{"headline":"Privilege escalation in OMEN Gaming Hub and HP Command Center","id":"CVE-2021-3919"},"products":["getgrav/grav-plugin-admin"],"published":"2021-11-19","related":[{"cvss_score":9.3,"headline":"Unauthenticated Arbitrary YAML Write/Update leads to Code Execution","id":"CVE-2021-21425","kev_date_added":null,"published":"2021-04-07"},{"cvss_score":6.8,"headline":"Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/config/site` parameter `data[taxonomies]`","id":"CVE-2025-66308","kev_date_added":null,"published":"2025-12-01"},{"cvss_score":6.5,"headline":"Grav Admin Plugin vulnerable to User Enumeration \u0026 Email Disclosure","id":"CVE-2025-66307","kev_date_added":null,"published":"2025-12-01"},{"cvss_score":6.2,"headline":"Grav is vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the \"Blog Config\" tab","id":"CVE-2025-66309","kev_date_added":null,"published":"2025-12-01"},{"cvss_score":6.2,"headline":"Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` parameter `data[header][template]` in Advanced Tab","id":"CVE-2025-66310","kev_date_added":null,"published":"2025-12-01"},{"cvss_score":6.2,"headline":"Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` in Multiples parameters","id":"CVE-2025-66311","kev_date_added":null,"published":"2025-12-01"},{"cvss_score":6.2,"headline":"Grav Admin Plugin is vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/accounts/groups/[group]` parameter `data[readableName]`","id":"CVE-2025-66312","kev_date_added":null,"published":"2025-12-01"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-03","vendors":["getgrav"]},"summary":"Stored XSS in Grav Admin plugin allows attackers to inject malicious scripts, potentially leading to session hijacking or code execution.","url":"https://insights.sbomify.com/CVE-2021-3920/"}