{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-84695 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-84695 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-84695 is a critical cross-site scripting vulnerability in bookstackapp bookstack, published on 2 Sep 2026. 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-2026-84695 and fix it if it is affected.\n\nWhat it is: CVE-2026-84695 is a critical cross-site scripting vulnerability in bookstackapp bookstack, published on 2 Sep 2026. 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-2026-84695 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-2026-84695/ (Markdown: https://insights.sbomify.com/CVE-2026-84695/index.md)","id":"CVE-2026-84695","markdown":"https://insights.sbomify.com/CVE-2026-84695/index.md","name":"CVE-2026-84695","record":{"aliases":["GHSA-r46q-wv4x-rj72"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["account_takeover","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"BookStack documentation","requires_auth":"low_privilege","summary":"Attackers with editor permissions can inject scripts via SVG uploads that execute in administrator browsers, potentially leading to account takeover.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.3,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"BookStack before 26.05.4 contains a stored cross-site scripting vulnerability in the drawing upload endpoint that accepts unvalidated base64 content and stores it without content inspection. Attackers with editor permissions can upload SVG files containing scripts that execute in administrator browsers when accessed through the image gallery API without content-type validation or CSP headers.","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":"BookStack before 26.05.4 Stored XSS via Drawing Upload","id":"CVE-2026-84695","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":6,"next":{"headline":"Phison PS3111-S11 Controller Firmware Missing Authentication on Vendor Unique Commands","id":"CVE-2026-84696"},"packages":[],"prev":{"headline":"Coolify before 4.2.0 Remote Code Execution via Environment Variable Key","id":"CVE-2026-84694"},"products":["bookstack"],"published":"2026-09-02","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-02","vendors":["bookstackapp"]},"summary":"Attackers with editor permissions can inject scripts via SVG uploads that execute in administrator browsers, potentially leading to account takeover.","url":"https://insights.sbomify.com/CVE-2026-84695/"}