{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33955 exists.","fix":"No fix has been published for CVE-2026-33955 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-33955 is a high-severity cross-site scripting vulnerability in streetwriters Notesnook Web/Desktop, published on 27 Mar 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33955 and fix it if it is affected.\n\nWhat it is: CVE-2026-33955 is a high-severity cross-site scripting vulnerability in streetwriters Notesnook Web/Desktop, published on 27 Mar 2026. It can only be exploited from the same machine or local network, 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-2026-33955 exists.\n\nAffected product: streetwriters Notesnook Web/Desktop. 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-2026-33955/ (Markdown: https://insights.sbomify.com/CVE-2026-33955/index.md)","id":"CVE-2026-33955","markdown":"https://insights.sbomify.com/CVE-2026-33955/index.md","name":"CVE-2026-33955","record":{"aliases":["GHSA-45g3-cv93-q59v"],"analysis":{"component_type":"desktop_application","fix_type":"patch","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Notesnook desktop app","requires_auth":"none","summary":"Attackers can achieve remote code execution in the Notesnook desktop app via stored XSS in the note history viewer due to insecure HTML rendering and Electron configuration.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"notesnook_desktop","vendor":"streetwriters"}],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Notesnook is a note-taking app. Prior to version 3.3.11 on Web/Desktop, a cross-site scripting vulnerability stored in the note history comparison viewer can escalate to remote code execution in a desktop application. The issue is triggered when an attacker-controlled note header is displayed using `dangerouslySetInnerHTML` without secure handling. When combined with the full backup and restore feature in the desktop application, this becomes remote code execution because Electron is configured with `nodeIntegration: true` and `contextIsolation: false`. Version 3.3.11 patches the issue.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"Notesnook vulnerable to RCE via stored XSS in Note History diff viewer","id":"CVE-2026-33955","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Memory corruption in Exynos 1330 firmware","id":"CVE-2026-33956"},"packages":[],"prev":{"headline":"LinkAce discloses private notesto unauthorized authenticated users via the web link detail page","id":"CVE-2026-33954"},"products":["Notesnook Web/Desktop"],"published":"2026-03-27","related":[{"cvss_score":9.7,"headline":"Notesnook vulnerable to RCE via stored XSS in Web Clipper rendering","id":"CVE-2026-33976","kev_date_added":null,"published":"2026-03-27"},{"cvss_score":9.6,"headline":"Notesnook: RCE via stored XSS in note export rendering","id":"CVE-2026-42090","kev_date_added":null,"published":"2026-05-04"},{"cvss_score":5.4,"headline":"Notesnook has Stored XSS via unsanitized Twitter/X embed URL in editor (`tweetToEmbed`)","id":"CVE-2026-31876","kev_date_added":null,"published":"2026-03-11"}],"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":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-04-03","vendors":["streetwriters"]},"summary":"Attackers can achieve remote code execution in the Notesnook desktop app via stored XSS in the note history viewer due to insecure HTML rendering and Electron configuration.","url":"https://insights.sbomify.com/CVE-2026-33955/"}