{"answers":{"affected":"It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33978 exists.","fix":"No fix has been published for CVE-2026-33978 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-33978 is a medium-severity cross-site scripting vulnerability in streetwriters notesnook, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-33978 and fix it if it is affected.\n\nWhat it is: CVE-2026-33978 is a medium-severity cross-site scripting vulnerability in streetwriters notesnook, published on 1 Apr 2026. An attacker can exploit it over the internet without logging in, 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-2026-33978 exists.\n\nAffected product: streetwriters notesnook. 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-2026-33978/ (Markdown: https://insights.sbomify.com/CVE-2026-33978/index.md)","id":"CVE-2026-33978","markdown":"https://insights.sbomify.com/CVE-2026-33978/index.md","name":"CVE-2026-33978","record":{"aliases":["GHSA-f27j-fqc6-v7pm"],"analysis":{"component_type":"mobile_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Notesnook mobile app","requires_auth":"none","summary":"Attackers can execute arbitrary JavaScript in the mobile share editor WebView by injecting malicious HTML into web clip title metadata.","user_interaction":"required","vuln_class":"xss"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"notesnook_mobile","vendor":"streetwriters"}],"cvss":{"score":5.4,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-79","name":"Improper Neutralization of Input During Web Page Generation"}],"description":"Notesnook is a note-taking app focused on user privacy \u0026 ease of use. Prior to version 3.3.17, a stored XSS vulnerability exists in the mobile share / web clip flow because attacker-controlled clip metadata is concatenated into HTML without escaping and then rendered with innerHTML inside the mobile share editor WebView. An attacker can control the shared title metadata (for example through Android/iOS share metadata such as TITLE / SUBJECT, or through link-preview title data) and inject HTML such as \u003c/a\u003e\u003cimg src=x onerror=...\u003e. When the victim opens the Notesnook share flow and selects Web clip, the payload is inserted into the generated HTML and executed in the mobile editor WebView. This issue has been patched in version 3.3.17.","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: Stored XSS in mobile share editor via unescaped web clip title metadata","id":"CVE-2026-33978","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"xss","year":"2026"},"n_packages":0,"n_references":3,"next":{"headline":"Express XSS Sanitizer: allowedTags/allowedAttributes bypass leads to permissive sanitization (XSS risk)","id":"CVE-2026-33979"},"packages":[],"prev":{"headline":"FreeRDP: DoS via WINPR_ASSERT in IMA ADPCM audio decoder (dsp.c:331)","id":"CVE-2026-33977"},"products":["notesnook"],"published":"2026-04-01","related":[],"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":"partial"},"state":"PUBLISHED","updated":"2026-04-01","vendors":["streetwriters"]},"summary":"Attackers can execute arbitrary JavaScript in the mobile share editor WebView by injecting malicious HTML into web clip title metadata.","url":"https://insights.sbomify.com/CVE-2026-33978/"}