CVE-2026-70598: Out-of-bounds Read (CVSS 3.9)

Description

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3, offscreen rendering frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the app. This issue is fixed in 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3.

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CVSS v3.1 Score

3.9

LOW

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:N/A:L

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

References

Other References

https://github.com/electron/electron/commit/2c24640e7b0b9c74fe9f44bce0fde138340ff4fb https://github.com/electron/electron/security/advisories/GHSA-pfmc-3mgc-p6fp

Frequently Asked Questions

What is CVE-2026-70598? +

Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3, offscreen rendering frame data received from the GPU process was not fully validated by the main process. A compromised GPU process could cause the main process to read out-of-bounds memory while producing paint event images, disclosing memory or crashing the app. This issue is fixed in 39.8.10, 40.9.0, 41.2.1, and 42.0.0-beta.3. It has a CVSS v3.1 base score of 3.9 (LOW).

How severe is CVE-2026-70598? +

CVE-2026-70598 has a CVSS v3.1 score of 3.9 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

How do I check if I'm vulnerable to CVE-2026-70598? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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