GHSA-9pf5-hg6p-4pwp CVE-2026-70599
Electron: Permission Check Handler Receives Main Frame Origin Instead of Requesting Iframe Origin
- Severity
- 5.9 / 10
- Medium · CVSS 3.1
- Exploit chance (EPSS)
- 0.19%
- Chance of exploitation in the next 30 days. Higher than 9.07% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-346 Origin Validation Error
- Fix
39.8.7- Upgrade electron to this version or later
Description
Impact
For serial-port and media (camera / microphone) permission checks made from an iframe, the requestingOrigin passed to session.setPermissionCheckHandler was the top-level frame's origin rather than the requesting frame's. Origin-based handler logic could therefore grant a cross-origin iframe device access intended only for the top-level origin.
Apps are only affected if they use setPermissionCheckHandler with origin-based logic and embed cross-origin iframes with delegated device permissions. Apps that base the decision on details.securityOrigin, or that do not embed such iframes, are not affected.
Workarounds
Check details.securityOrigin instead of requestingOrigin for these permissions, or do not delegate device permissions to untrusted iframes.
Fixed Versions
42.0.0-beta.141.2.040.9.039.8.7
For more information
If you have any questions or comments about this advisory, email Electron at security@electronjs.org
Affected versions
npm
| Package | Vulnerable | Fixed in |
|---|---|---|
| electron | < 39.8.7 |
39.8.7 |
| electron | >= 40.0.0-alpha.1, < 40.9.0 |
40.9.0 |
| electron | >= 41.0.0-alpha.1, < 41.2.0 |
41.2.0 |
| electron | >= 42.0.0-alpha.1, < 42.0.0-beta.1 |
42.0.0-beta.1 |
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
electron npm → 39.8.7
- npm
npm install electron@39.8.7- yarn
yarn add electron@39.8.7- pnpm
pnpm add electron@39.8.7
Severity breakdown
CVSS 3.1 5.9
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Attack vector
- Network
- Attack complexity
- High
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Weakness
CWE-346: Origin Validation Error
The product does not properly verify that the source of data or communication is valid.
References
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-qqvq-6xgj-jw8g Electron affected by libvpx's heap buffer overflow in vp8 encoding | High Known exploited | Also affects electron |
| GHSA-j7hp-h8jx-5ppr libwebp: OOB write in BuildHuffmanTable | High Known exploited | Also affects electron |
| GHSA-995f-9x5r-2rcj Heap buffer overflow in GPU | Critical Known exploited | Also affects electron |
| GHSA-jr5w-w6x2-84p9 Electron: Mitigation for compromised eMudhra intermediate certificates | High | Also affects electron |
| GHSA-h3v5-h239-pg29 Electron: Off-screen rendering on macOS trusts GPU-supplied frame geometry | Low | Also affects electron |
| GHSA-3qxv-5xgr-q7w9 Electron: Frame subscription trusts GPU-supplied frame geometry | Low | Also affects electron |
| GHSA-997q-gvvc-jwmx Electron: openExternal permission requests can be attributed to the wrong origin | Medium | Also affects electron |
| GHSA-fw47-9c62-h3vw Electron: HID and USB permission checks can be attributed to the wrong origin | Medium | Also affects electron |
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