{"answers":{"affected":"6 open source packages ship an affected version, including electron. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-34774 in the wild and no public exploit code.","fix":"Upgrade electron to a fixed version for your release line: 39.8.1, 40.7.0 or 41.0.0.","what":"CVE-2026-34774 is a high-severity use after free vulnerability in Electronjs Electron, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-34774 and fix it if it is affected.\n\nWhat it is: CVE-2026-34774 is a high-severity use after free vulnerability in Electronjs Electron, published on 3 Apr 2026. 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-2026-34774 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- electron (npm): affected all versions; fixed in 39.8.1\n- electron (npm): affected all versions; fixed in 39.8.1\n- electron (npm): affected from 40.0.0-alpha.1; fixed in 40.7.0\n- electron (npm): affected from 40.0.0-alpha.1; fixed in 40.7.0\n- electron (npm): affected from 41.0.0-alpha.1; fixed in 41.0.0\n- electron (npm): affected from 41.0.0-alpha.1; fixed in 41.0.0\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-2026-34774/ (Markdown: https://insights.sbomify.com/CVE-2026-34774/index.md)","id":"CVE-2026-34774","markdown":"https://insights.sbomify.com/CVE-2026-34774/index.md","name":"CVE-2026-34774","record":{"aliases":["GHSA-532v-xpq5-8h95"],"analysis":{"component_type":"desktop_application","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Electron framework","requires_auth":"none","summary":"Electron apps using offscreen rendering and child windows are vulnerable to use-after-free, potentially allowing code execution or crashes.","user_interaction":"not_required","vuln_class":"use_after_free"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"electron","vendor":"electronjs"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-825","name":"Expired Pointer Dereference"},{"id":"CWE-416","name":"Use After Free"}],"description":"Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to versions 39.8.1, 40.7.0, and 41.0.0, apps that use offscreen rendering and allow child windows via window.open() may be vulnerable to a use-after-free. If the parent offscreen WebContents is destroyed while a child window remains open, subsequent paint frames on the child dereference freed memory, which may lead to a crash or memory corruption. Apps are only affected if they use offscreen rendering (webPreferences.offscreen: true) and their setWindowOpenHandler permits child windows. Apps that do not use offscreen rendering, or that deny child windows, are not affected. This issue has been patched in versions 39.8.1, 40.7.0, and 41.0.0.","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":"Electron: Use-after-free in offscreen child window paint callback","id":"CVE-2026-34774","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"electronjs:electron","products":["electronjs:electron"],"type":"use_after_free","year":"2026"},"n_packages":6,"n_references":1,"next":{"headline":"Electron: nodeIntegrationInWorker not correctly scoped in shared renderer processes","id":"CVE-2026-34775"},"packages":[{"ecosystem":"npm","fixed":["39.8.1"],"introduced":["0"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-532v-xpq5-8h95"},{"ecosystem":"npm","fixed":["39.8.1"],"introduced":["0"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-532v-xpq5-8h95"},{"ecosystem":"npm","fixed":["40.7.0"],"introduced":["40.0.0-alpha.1"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-532v-xpq5-8h95"},{"ecosystem":"npm","fixed":["40.7.0"],"introduced":["40.0.0-alpha.1"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-532v-xpq5-8h95"},{"ecosystem":"npm","fixed":["41.0.0"],"introduced":["41.0.0-alpha.1"],"last_affected":[],"package":"electron","purl":null,"source":"GHSA-532v-xpq5-8h95"},{"ecosystem":"npm","fixed":["41.0.0"],"introduced":["41.0.0-alpha.1"],"last_affected":[],"package":"electron","purl":"pkg:npm/electron","source":"GHSA-532v-xpq5-8h95"}],"prev":{"headline":"Electron: Registry key path injection in app.setAsDefaultProtocolClient on Windows","id":"CVE-2026-34773"},"products":["electron"],"published":"2026-04-03","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"}],"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":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["electron"]},"summary":"Electron apps using offscreen rendering and child windows are vulnerable to use-after-free, potentially allowing code execution or crashes.","url":"https://insights.sbomify.com/CVE-2026-34774/"}