CVE-2026-70612
What it is
Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3, requests to open external protocol URLs from web content did not take iframe sandbox restrictions into account, so a sandboxed iframe could cause an OS-registered external application to be launched. The frame sandbox state was also not made available to the app permission handlers, affecting apps that render untrusted content in sandboxed iframes and grant the openExternal permission by default when no setPermissionRequestHandler is installed. This issue is fixed in 39.8.8, 40.9.0, 41.2.1, and 42.0.0-beta.3.
At a glance
- Exploitability
- Can be exploited over the network without logging in. Limited direct impact.
- Exploit odds
- 0.4% chance of exploitation in the next 30 days (EPSS).
- Fix
- A patch, advisory or fixed version is referenced. Upgrade or apply it.
Timeline
- PublishedDisclosed publicly on CVE.org and NVD
- Last updatedMost recent change to the record
Why it ranks here
- Exploited in the wild: no, CISA does not list it.
- Exploit odds: 0.4% in the next 30 days (EPSS).
- Severity: 5.4 MEDIUM (CVSS).
- Fix: a patch or advisory is linked.
Details
- Published
- Last modified
- Exploit probability
- 0.4% · EPSS, next 30 days
- Weakness
- CWE-284 · Improper access control
- Record status
- Analyzed
Affected
- Electronjs Electron < 39.8.8
- Electronjs Electron < 40.9.0
- Electronjs Electron ≤ 41.2.1
- Electronjs Electron 42.0.0
Attack profile CVSS 3.1 · 5.4
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Raw vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
Is it in your code?
Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.
Read https://cve-list.com/agent/cve/CVE-2026-70612.md and follow it. Check whether this project is affected by CVE-2026-70612. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.
Fix and advisories
- https://github.com/electron/electron/commit/08b9d0a220e267d1a2402a44bdd01a2e9aa320b5
- https://github.com/electron/electron/commit/2764e4c35168855f614876051823db4f58a3714a
- https://github.com/electron/electron/commit/477dcf7afc6550715f9ec5e6f39ee38e5dd7bf39
- https://github.com/electron/electron/commit/c39e3d5687d57434c8d5fe814c5152efd2f631c3
- https://github.com/electron/electron/pull/50961
- https://github.com/electron/electron/pull/50962
- https://github.com/electron/electron/pull/50963
- https://github.com/electron/electron/pull/50964
- https://github.com/electron/electron/releases/tag/v39.8.8
- https://github.com/electron/electron/releases/tag/v40.9.0
References
- https://github.com/electron/electron/commit/08b9d0a220e267d1a2402a44bdd01a2e9aa320b5
- https://github.com/electron/electron/commit/2764e4c35168855f614876051823db4f58a3714a
- https://github.com/electron/electron/commit/477dcf7afc6550715f9ec5e6f39ee38e5dd7bf39
- https://github.com/electron/electron/commit/c39e3d5687d57434c8d5fe814c5152efd2f631c3
- https://github.com/electron/electron/pull/50961
- https://github.com/electron/electron/pull/50962
- https://github.com/electron/electron/pull/50963
- https://github.com/electron/electron/pull/50964
- https://github.com/electron/electron/releases/tag/v39.8.8
- https://github.com/electron/electron/releases/tag/v40.9.0
- https://github.com/electron/electron/releases/tag/v41.2.1
- https://github.com/electron/electron/releases/tag/v42.0.0-beta.3
- https://github.com/electron/electron/security/advisories/GHSA-p2rr-rvmm-c5fp