{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-24147 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-24147 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-24147 is a medium-severity cross-site scripting vulnerability in Unknown Modern Events Calendar Lite, published on 18 Mar 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-2021-24147 and fix it if it is affected.\n\nWhat it is: CVE-2021-24147 is a medium-severity cross-site scripting vulnerability in Unknown Modern Events Calendar Lite, published on 18 Mar 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-2021-24147 in the wild and no public exploit code.\n\nAffected product: Unknown Modern Events Calendar Lite. 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-2021-24147/ (Markdown: https://insights.sbomify.com/CVE-2021-24147/index.md)","id":"CVE-2021-24147","markdown":"https://insights.sbomify.com/CVE-2021-24147/index.md","name":"CVE-2021-24147","record":{"aliases":["GHSA-38c2-7994-ggcm"],"analysis":{"component_type":"cms_plugin","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"WordPress plugin","requires_auth":"low_privilege","summary":"Authenticated attackers can inject malicious scripts via event notes, leading to code execution in the frontend for other users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"WPScan","cpe":[{"product":"modern_events_calendar_lite","vendor":"webnus"}],"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":"Unvalidated input and lack of output encoding in the Modern Events Calendar Lite WordPress plugin, versions before 5.16.5, did not sanitise the mic_comment field (Notes on time) when adding/editing an event, allowing users with privilege as low as author to add events with a Cross-Site Scripting payload in them, which will be triggered in the frontend when viewing the event.","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":"Modern Events Calendar Lite \u003c 5.16.5 - Authenticated Stored Cross-Site Scripting (XSS)","id":"CVE-2021-24147","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"MStore API \u003c 3.2.0 - Authentication Bypass With Sign In With Apple","id":"CVE-2021-24148"},"packages":[],"prev":{"headline":"Modern Events Calendar Lite \u003c 5.16.5 - Unauthenticated Events Export","id":"CVE-2021-24146"},"products":["Modern Events Calendar Lite"],"published":"2021-03-18","related":[{"cvss_score":9.8,"headline":"Modern Events Calendar \u003c 6.1.5 - Unauthenticated Blind SQL Injection","id":"CVE-2021-24946","kev_date_added":null,"published":"2021-12-13"},{"cvss_score":8.8,"headline":"Modern Events Calendar Lite \u003c 5.16.6 - Authenticated SQL Injection","id":"CVE-2021-24149","kev_date_added":null,"published":"2021-03-18"},{"cvss_score":7.5,"headline":"Modern Events Calendar Lite \u003c 5.16.5 - Unauthenticated Events Export","id":"CVE-2021-24146","kev_date_added":null,"published":"2021-03-18"},{"cvss_score":7.2,"headline":"Modern Events Calendar Lite \u003c 5.16.5 - Authenticated Arbitrary File Upload leading to RCE","id":"CVE-2021-24145","kev_date_added":null,"published":"2021-03-18"},{"cvss_score":6.1,"headline":"Modern Events Calendar Lite \u003c 6.1.5 - Reflected Cross-Site Scripting","id":"CVE-2021-24925","kev_date_added":null,"published":"2021-12-13"},{"cvss_score":5.9,"headline":"Modern Events Calendar Lite \u003c= 6.3.0 - Unauthenticated SQL Injection","id":"CVE-2021-4458","kev_date_added":null,"published":"2025-07-12"},{"cvss_score":5.4,"headline":"Cross-site scripting in Modern Events Calendar Lite","id":"CVE-2022-30533","kev_date_added":null,"published":"2022-06-16"}],"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":["Unknown"]},"summary":"Authenticated attackers can inject malicious scripts via event notes, leading to code execution in the frontend for other users.","url":"https://insights.sbomify.com/CVE-2021-24147/"}