{"answers":{"affected":"2 open source packages ship an affected version, including ssddanbrown/bookstack. It affects 1 product.","exploited":"There is no known exploitation of CVE-2020-11055 in the wild and no public exploit code.","fix":"Upgrade ssddanbrown/bookstack to 0.29.2 or later.","what":"CVE-2020-11055 is a medium-severity cross-site scripting vulnerability in BookStackApp BookStack, published on 7 May 2020. Any signed-in user can exploit it over the network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2020-11055 and fix it if it is affected.\n\nWhat it is: CVE-2020-11055 is a medium-severity cross-site scripting vulnerability in BookStackApp BookStack, published on 7 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2020-11055 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- ssddanbrown/bookstack (Packagist): affected from 0.18.0; fixed in 0.29.2\n- ssddanbrown/bookstack (Packagist): affected from 0.18.0; fixed in 0.29.2\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-2020-11055/ (Markdown: https://insights.sbomify.com/CVE-2020-11055/index.md)","id":"CVE-2020-11055","markdown":"https://insights.sbomify.com/CVE-2020-11055/index.md","name":"CVE-2020-11055","record":{"aliases":["GHSA-5vf7-q87h-pg6w"],"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":"An attacker with comment permissions can inject malicious JavaScript into BookStack comments, executing code on other users' browsers.","user_interaction":"not_required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"bookstack","vendor":"bookstackapp"}],"cvss":{"score":6.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"In BookStack greater than or equal to 0.18.0 and less than 0.29.2, there is an XSS vulnerability in comment creation. A user with permission to create comments could POST HTML directly to the system to be saved in a comment, which would then be executed/displayed to others users viewing the comment. Through this vulnerability custom JavaScript code could be injected and therefore ran on other user machines. This most impacts scenarios where not-trusted users are given permission to create comments. This has been fixed in 0.29.2.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Cross-site Scripting in BookStack","id":"CVE-2020-11055","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"xss","year":"2020"},"n_packages":2,"n_references":4,"next":{"headline":"Potential Code Injection in Sprout Forms","id":"CVE-2020-11056"},"packages":[{"ecosystem":"Packagist","fixed":["0.29.2"],"introduced":["0.18.0"],"last_affected":[],"package":"ssddanbrown/bookstack","purl":null,"source":"GHSA-5vf7-q87h-pg6w"},{"ecosystem":"Packagist","fixed":["0.29.2"],"introduced":["0.18.0"],"last_affected":[],"package":"ssddanbrown/bookstack","purl":"pkg:composer/ssddanbrown/bookstack","source":"GHSA-5vf7-q87h-pg6w"}],"prev":{"headline":"Incorrect Provision of Specified Functionality in qutebrowser","id":"CVE-2020-11054"},"products":["BookStack"],"published":"2020-05-07","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":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"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":["BookStackApp"]},"summary":"An attacker with comment permissions can inject malicious JavaScript into BookStack comments, executing code on other users' browsers.","url":"https://insights.sbomify.com/CVE-2020-11055/"}