{"answers":{"affected":"6 open source packages ship an affected version, including electron. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-39184 in the wild and no public exploit code.","fix":"Upgrade electron to a fixed version for your release line: 11.5.0, 12.1.0 or 13.3.0.","what":"CVE-2021-39184 is a medium-severity vulnerability in Electronjs Electron, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-39184 and fix it if it is affected.\n\nWhat it is: CVE-2021-39184 is a medium-severity vulnerability in Electronjs Electron, published on 12 Oct 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-39184 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- electron (npm): affected all versions; fixed in 11.5.0\n- electron (npm): affected all versions; fixed in 11.5.0\n- electron (npm): affected from 12.0.0; fixed in 12.1.0\n- electron (npm): affected from 12.0.0; fixed in 12.1.0\n- electron (npm): affected from 13.0.0; fixed in 13.3.0\n- electron (npm): affected from 13.0.0; fixed in 13.3.0\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-2021-39184/ (Markdown: https://insights.sbomify.com/CVE-2021-39184/index.md)","id":"CVE-2021-39184","markdown":"https://insights.sbomify.com/CVE-2021-39184/index.md","name":"CVE-2021-39184","record":{"aliases":["GHSA-mpjm-v997-c4h4"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Electron framework","requires_auth":"none","summary":"A sandboxed renderer in Electron can access thumbnails of arbitrary local files, potentially exposing sensitive textual data to attackers.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"electron","vendor":"electronjs"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-862","name":"Missing Authorization"},{"id":"CWE-668","name":"Exposure of Resource to Wrong Sphere"}],"description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. A vulnerability in versions prior to 11.5.0, 12.1.0, and 13.3.0 allows a sandboxed renderer to request a \"thumbnail\" image of an arbitrary file on the user's system. The thumbnail can potentially include significant parts of the original file, including textual data in many cases. Versions 15.0.0-alpha.10, 14.0.0, 13.3.0, 12.1.0, and 11.5.0 all contain a fix for the vulnerability. Two workarounds aside from upgrading are available. One may make the vulnerability significantly more difficult for an attacker to exploit by enabling `contextIsolation` in one's app. One may also disable the functionality of the `createThumbnailFromPath` API if one does not need it.","ecosystems":["npm"],"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":"Sandboxed renderers can obtain thumbnails of arbitrary files through the nativeImage API","id":"CVE-2021-39184","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"electronjs:electron","products":["electronjs:electron"],"type":"information_disclosure","year":"2021"},"n_packages":6,"n_references":2,"next":{"headline":"Default CORS config allows any origin with credentials","id":"CVE-2021-39185"},"packages":[{"ecosystem":"npm","fixed":["11.5.0"],"introduced":["0"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-mpjm-v997-c4h4"},{"ecosystem":"npm","fixed":["11.5.0"],"introduced":["0"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-mpjm-v997-c4h4"},{"ecosystem":"npm","fixed":["12.1.0"],"introduced":["12.0.0"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-mpjm-v997-c4h4"},{"ecosystem":"npm","fixed":["12.1.0"],"introduced":["12.0.0"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-mpjm-v997-c4h4"},{"ecosystem":"npm","fixed":["13.3.0"],"introduced":["13.0.0"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-mpjm-v997-c4h4"},{"ecosystem":"npm","fixed":["13.3.0"],"introduced":["13.0.0"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-mpjm-v997-c4h4"}],"prev":{"headline":"Unsafe inline XSS Owncast","id":"CVE-2021-39183"},"products":["electron"],"published":"2021-10-12","related":[{"cvss_score":9.8,"headline":"Chromium Remote Code Execution in electron","id":"CVE-2017-16151","kev_date_added":null,"published":"2018-06-07"},{"cvss_score":8.8,"headline":"Electron protocol handler browser vulnerable to Command Injection","id":"CVE-2018-1000118","kev_date_added":null,"published":"2018-03-07"},{"cvss_score":8.4,"headline":"Electron: Context Isolation bypass via contextBridge VideoFrame transfer","id":"CVE-2026-34780","kev_date_added":null,"published":"2026-04-04"},{"cvss_score":8.3,"headline":"Electron: \u003cwebview\u003e can enable Node.js integration in Web Workers despite embedder restrictions","id":"CVE-2026-102676","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.2,"headline":"Electron drops inherited HTML sandbox restrictions for popups opened through OpenURLFromTab","id":"CVE-2026-102673","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.2,"headline":"Electron: Windows opened from a sandboxed top-level document do not inherit its sandbox restrictions","id":"CVE-2026-102674","kev_date_added":null,"published":"2026-09-29"},{"cvss_score":8.1,"headline":"Electron: Use-after-free in offscreen child window paint callback","id":"CVE-2026-34774","kev_date_added":null,"published":"2026-04-03"}],"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":["electron"]},"summary":"A sandboxed renderer in Electron can access thumbnails of arbitrary local files, potentially exposing sensitive textual data to attackers.","url":"https://insights.sbomify.com/CVE-2021-39184/"}