{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-42663 exists.","fix":"No fix has been published for CVE-2021-42663 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-42663 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Nov 2021. 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-2021-42663 and fix it if it is affected.\n\nWhat it is: CVE-2021-42663 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Nov 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-42663 exists.\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-2021-42663/ (Markdown: https://insights.sbomify.com/CVE-2021-42663/index.md)","id":"CVE-2021-42663","markdown":"https://insights.sbomify.com/CVE-2021-42663/index.md","name":"CVE-2021-42663","record":{"aliases":["GHSA-948r-pr54-gh74"],"analysis":{"component_type":"web_application","fix_type":"patch","impacts":["data_modify","security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"Online Event Booking System","requires_auth":"none","summary":"Attackers can inject HTML into the event booking system to alter website visibility and display malicious content to users.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"online_event_booking_and_reservation_system","vendor":"online_event_booking_and_reservation_system_project"}],"cvss":{"score":4.3,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"An HTML injection vulnerability exists in Sourcecodester Online Event Booking and Reservation System in PHP/MySQL via the msg parameter to /event-management/index.php. An attacker can leverage this vulnerability in order to change the visibility of the website. Once the target user clicks on a given link he will display the content of the HTML code of the attacker's choice.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2021-11-03","github_poc":1,"max_poc_stars":1,"metasploit":0,"nuclei":1,"refs":[{"date":"2021-11-03T18:49:28Z","kind":"github_poc","ref":"https://github.com/0xDeku/CVE-2021-42663","stars":1,"title":"CVE-2021-42663 - HTML Injection vulnerability in the Online event booking and reservation system. "},{"date":null,"kind":"nuclei","ref":"http/cves/2021/CVE-2021-42663.yaml","stars":null,"title":"Sourcecodester Online Event Booking and Reservation System 2.3.0 - Cross-Site Scripting"}],"tier":"weaponised"},"has_fix":null,"headline":"Cross-site scripting in n/a","id":"CVE-2021-42663","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 scripting in n/a","id":"CVE-2021-42664"},"packages":[],"prev":{"headline":"Cross-site scripting in n/a","id":"CVE-2021-42662"},"products":["n/a"],"published":"2021-11-05","related":[{"cvss_score":9.8,"headline":"SQL injection in n/a","id":"CVE-2021-42667","kev_date_added":null,"published":"2021-11-05"},{"cvss_score":5.4,"headline":"Cross-site scripting in n/a","id":"CVE-2021-42662","kev_date_added":null,"published":"2021-11-05"}],"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)"},{"class":"attribution","licence":"MIT","name":"Nuclei templates"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"Attackers can inject HTML into the event booking system to alter website visibility and display malicious content to users.","url":"https://insights.sbomify.com/CVE-2021-42663/"}