{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-28806 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-28806 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-28806 is a medium-severity cross-site scripting vulnerability in Qnap Qts, published on 3 Jun 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-2021-28806 and fix it if it is affected.\n\nWhat it is: CVE-2021-28806 is a medium-severity cross-site scripting vulnerability in Qnap Qts, published on 3 Jun 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-2021-28806 in the wild and no public exploit code.\n\nAffected product: Qnap Qts. 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-2021-28806/ (Markdown: https://insights.sbomify.com/CVE-2021-28806/index.md)","id":"CVE-2021-28806","markdown":"https://insights.sbomify.com/CVE-2021-28806/index.md","name":"CVE-2021-28806","record":{"aliases":["GHSA-q3xx-v678-8w29"],"analysis":{"component_type":"network_device","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"QNAP NAS OS","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into QNAP NAS web interfaces, potentially leading to code execution or account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"qnap","cpe":[{"product":"qts","vendor":"qnap"},{"product":"quts_hero","vendor":"qnap"},{"product":"qutscloud","vendor":"qnap"}],"cvss":{"score":5.7,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"A DOM-based XSS vulnerability has been reported to affect QNAP NAS running QTS and QuTS hero. If exploited, this vulnerability allows attackers to inject malicious code. This issue affects: QNAP Systems Inc. QTS versions prior to 4.5.3.1652 Build 20210428. QNAP Systems Inc. QuTS hero versions prior to h4.5.2.1638 Build 20210414. QNAP Systems Inc. QuTScloud versions prior to c4.5.5.1656 Build 20210503. This issue does not affect: QNAP Systems Inc. QTS 4.3.6; 4.3.3.","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":"DOM-Based XSS Vulnerability in QTS and QuTS hero","id":"CVE-2021-28806","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"qnap:qts","products":["qnap:qts","qnap:quts_hero","qnap:qutscloud"],"type":"xss","year":"2021"},"n_packages":0,"n_references":1,"next":{"headline":"Post-Authentication Reflected XSS Vulnerability in Q'center","id":"CVE-2021-28807"},"packages":[],"prev":{"headline":"Inclusion of Sensitive Information in QSS","id":"CVE-2021-28805"},"products":["QTS","QuTS hero","QuTScloud"],"published":"2021-06-03","related":[{"cvss_score":9.8,"headline":"QNAP Network-Attached Storage (NAS) Command Injection","id":"CVE-2020-2509","kev_date_added":"2022-04-11","published":"2021-04-17"},{"cvss_score":9.8,"headline":"QNAP NAS File Station Command Injection","id":"CVE-2018-19949","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":9.8,"headline":"QNAP QTS Improper Input Validation","id":"CVE-2019-7193","kev_date_added":"2022-06-08","published":"2019-12-05"},{"cvss_score":8,"headline":"QNAP NAS File Station Cross-Site Scripting","id":"CVE-2018-19943","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":6.1,"headline":"QNAP NAS File Station Cross-Site Scripting","id":"CVE-2018-19953","kev_date_added":"2022-05-24","published":"2020-10-28"},{"cvss_score":10,"headline":"QTS, QuTS hero, QuTScloud","id":"CVE-2024-32766","kev_date_added":null,"published":"2024-04-26"},{"cvss_score":10,"headline":"Command injection in n/a","id":"CVE-2017-7876","kev_date_added":null,"published":"2017-06-15"}],"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":"2024-09-16","vendors":["QNAP Systems Inc."]},"summary":"Attackers can inject malicious scripts into QNAP NAS web interfaces, potentially leading to code execution or account takeover.","url":"https://insights.sbomify.com/CVE-2021-28806/"}