{"answers":{"affected":"It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-3768 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2021-3768 yet. Limit exposure of the affected software until one is available.","what":"CVE-2021-3768 is a medium-severity cross-site scripting vulnerability in bookstackapp/bookstack, published on 6 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3768 and fix it if it is affected.\n\nWhat it is: CVE-2021-3768 is a medium-severity cross-site scripting vulnerability in bookstackapp/bookstack, published on 6 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-3768 in the wild and no public exploit code.\n\nAffected product: bookstackapp/bookstack. 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-2021-3768/ (Markdown: https://insights.sbomify.com/CVE-2021-3768/index.md)","id":"CVE-2021-3768","markdown":"https://insights.sbomify.com/CVE-2021-3768/index.md","name":"CVE-2021-3768","record":{"aliases":["GHSA-mjrp-x8v8-f2mx"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","account_takeover"],"network_reachable":"yes","non_default_config":false,"product_category":"BookStack documentation","requires_auth":"low_privilege","summary":"Attackers can inject malicious scripts into BookStack pages, potentially stealing user sessions or executing code in victim browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"@huntrdev","cpe":[{"product":"bookstack","vendor":"bookstackapp"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/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":"bookstack 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 bookstackapp/bookstack","id":"CVE-2021-3768","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2021"},"n_packages":0,"n_references":2,"next":{"headline":"OS Command Injection in ohmyzsh/ohmyzsh","id":"CVE-2021-3769"},"packages":[],"prev":{"headline":"Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack","id":"CVE-2021-3767"},"products":["bookstackapp/bookstack"],"published":"2021-09-06","related":[{"cvss_score":7.9,"headline":"Remote Code Execution Through Image Uploads in BookStack","id":"CVE-2020-5256","kev_date_added":null,"published":"2020-03-09"},{"cvss_score":7.7,"headline":"Cross-Site Scripting in BookStack","id":"CVE-2020-26210","kev_date_added":null,"published":"2020-11-03"},{"cvss_score":7.7,"headline":"Cross-Site Scripting in BookStack","id":"CVE-2020-26211","kev_date_added":null,"published":"2020-11-03"},{"cvss_score":7.6,"headline":"Cross-site Scripting (XSS) - Stored in bookstackapp/bookstack","id":"CVE-2022-0877","kev_date_added":null,"published":"2022-03-08"},{"cvss_score":7.6,"headline":"Unrestricted Upload of File with Dangerous Type in bookstackapp/bookstack","id":"CVE-2021-3915","kev_date_added":null,"published":"2021-11-13"},{"cvss_score":6.5,"headline":"Book Stack v23.10.2 - LFR via Blind SSRF","id":"CVE-2023-6199","kev_date_added":null,"published":"2023-11-20"},{"cvss_score":6.5,"headline":"Improper Access Control in bookstackapp/bookstack","id":"CVE-2021-4026","kev_date_added":null,"published":"2021-11-30"}],"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":["bookstackapp"]},"summary":"Attackers can inject malicious scripts into BookStack pages, potentially stealing user sessions or executing code in victim browsers.","url":"https://insights.sbomify.com/CVE-2021-3768/"}