Know every vulnerabilitybefore it knows you.
DevGuard continuously monitors your dependencies and alerts you when CVEs like this one affect your stack — with real-time threat intelligence built for developers.
GHSA-gxh7-wv9q-fwfr
No affected components available
Impact
A Content-Security-Policy that disables eval, specifically setting a script-src directive and not providing unsafe-eval in that directive, is not respected in renderers that have sandbox and contextIsolation disabled. i.e. sandbox: false and contextIsolation: false in the webPreferences object.
This resulted in incorrectly allowing usage of methods like eval() and new Function, which can result in an expanded attack surface.
Patches
This issue only ever affected the 22 and 23 major versions of Electron and has been fixed in the latest versions of those release lines. Specifically, these versions contain the fixes:
- 22.0.1
- 23.0.0-alpha.2
We recommend all apps upgrade to the latest stable version of Electron, especially if they use sandbox: false or contextIsolation: false.
Workarounds
If upgrading isn't possible, this issue can be addressed without upgrading by enabling at least one of sandbox: true or contextIsolation: true on all renderers.
const mainWindow = new BrowserWindow({
webPreferences: {
sandbox: true,
}
});
For more information
If you have any questions or comments about this advisory, email us at security@electronjs.org.
Credit
Thanks to user @andreasdj for reporting this issue.
The vulnerability can be exploited over the network without needing physical access. It is difficult for an attacker to exploit this vulnerability and may require special conditions. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a high impact on the confidentiality of the information. There is a high impact on the integrity of the data. There is a high impact on the availability of the system.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
Browse More
Continuously monitor your dependencies and get alerted when vulnerabilities like this one affect your stack.
Checkout DevGuard