CVE-2026-34774
CVE-2026-34774 · Electron: Use-after-free in offscreen child window paint callback
Cette page présente des faits issus de sources publiques. Consultez l’avis original avant toute mise à jour.
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.
CVSS 8.1 · Élevée · EPSS 0,4% · Correctif disponible
- Publication
- Mise à jour
Pile logicielle: node
Produits et versions concernés
electron
- Versions du logiciel
- < 39.8.1: Concernée
- >= 40.0.0-alpha.1, < 40.7.0: Concernée
- >= 41.0.0-alpha.1, < 41.0.0: Concernée
Aucun correctif publié
electron npm
- Plages de versions concernées
- SEMVER: < 39.8.1
Mettez à jour vers 39.8.1
electron npm
- Plages de versions concernées
- SEMVER: ≥ 40.0.0-alpha.1, < 40.7.0
Mettez à jour vers 40.7.0
electron npm
- Plages de versions concernées
- SEMVER: ≥ 41.0.0-alpha.1, < 41.0.0
Mettez à jour vers 41.0.0
Sources originales
- https://github.com/electron/electron/security/advisories/GHSA-532v-xpq5-8h95
- https://access.redhat.com/security/cve/CVE-2026-34774
- https://bugzilla.redhat.com/show_bug.cgi?id=2455026
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34774.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-34774