{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-21353 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2020-21353 yet. Limit exposure of the affected software until one is available.","what":"CVE-2020-21353 is a medium-severity cross-site scripting vulnerability in n/a, published on 6 Aug 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-2020-21353 and fix it if it is affected.\n\nWhat it is: CVE-2020-21353 is a medium-severity cross-site scripting vulnerability in n/a, published on 6 Aug 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-2020-21353 in the wild and no public exploit code.\n\nAffected product: n/a. 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-2020-21353/ (Markdown: https://insights.sbomify.com/CVE-2020-21353/index.md)","id":"CVE-2020-21353","markdown":"https://insights.sbomify.com/CVE-2020-21353/index.md","name":"CVE-2020-21353","record":{"aliases":["GHSA-7rx9-2m95-hgp8"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"GetSimple CMS","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into the admin snippets module, potentially compromising administrator sessions and site integrity.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"getsimplecms","vendor":"get-simple"}],"cvss":{"score":5.4,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"A stored cross site scripting (XSS) vulnerability in /admin/snippets.php of GetSimple CMS 3.4.0a allows attackers to execute arbitrary web scripts or HTML via crafted payload in the Edit Snippets module.","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 n/a","id":"CVE-2020-21353","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2020"},"n_packages":0,"n_references":1,"next":{"headline":"Information disclosure in n/a","id":"CVE-2020-21356"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2020-21345"},"products":["n/a"],"published":"2021-08-06","related":[{"cvss_score":9.8,"headline":"Code injection in n/a","id":"CVE-2023-46042","kev_date_added":null,"published":"2023-10-19"},{"cvss_score":9.1,"headline":"Path traversal in n/a","id":"CVE-2020-18191","kev_date_added":null,"published":"2020-10-02"},{"cvss_score":8.7,"headline":"GetSimple CMS 3.2.1 Authenticated RCE via Arbitrary PHP File Upload","id":"CVE-2013-10032","kev_date_added":null,"published":"2025-07-25"},{"cvss_score":8.6,"headline":"GetSimple CMS My SMTP Contact Plugin 1.1.2 - PHP Code Injection","id":"CVE-2021-47778","kev_date_added":null,"published":"2026-01-21"},{"cvss_score":8.5,"headline":"GetSimple CMS Custom JS 0.1 - CSRF to XSS to RCE","id":"CVE-2021-47860","kev_date_added":null,"published":"2026-01-21"},{"cvss_score":7.2,"headline":"File upload in n/a","id":"CVE-2021-28976","kev_date_added":null,"published":"2021-06-23"},{"cvss_score":6.9,"headline":"GetSimpleCMS profile.php cross-site request forgery","id":"CVE-2024-11125","kev_date_added":null,"published":"2024-11-12"}],"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":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can inject malicious scripts into the admin snippets module, potentially compromising administrator sessions and site integrity.","url":"https://insights.sbomify.com/CVE-2020-21353/"}