Electron crashes in clipboard.readImage() on malformed clipboard image data

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Summary

CVECVE-2026-34781
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-07 22:16:23 UTC
Updated2026-04-08 21:27:00 UTC
DescriptionElectron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. Prior to 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5, apps that call clipboard.readImage() may be vulnerable to a denial of service. If the system clipboard contains image data that fails to decode, the resulting null bitmap is passed unchecked to image construction, triggering a controlled abort and crashing the process. Apps are only affected if they call clipboard.readImage(). Apps that do not read images from the clipboard are not affected. This issue does not allow memory corruption or code execution. This vulnerability is fixed in 39.8.5, 40.8.5, 41.1.0, and 42.0.0-alpha.5.

Risk And Classification

Primary CVSS: v3.1 2.8 LOW from [email protected]

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

EPSS: 0.000140000 probability, percentile 0.024460000 (date 2026-04-10)

Problem Types: CWE-476 | CWE-476 CWE-476: NULL Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary2.8LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L
3.1CNADECLARED2.8LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:L

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Electron Electron affected < 39.8.5 Not specified
CNA Electron Electron affected >= 40.0.0-alpha.1, < 40.8.5 Not specified
CNA Electron Electron affected >= 41.0.0-alpha.1, < 41.1.0 Not specified
CNA Electron Electron affected >= 42.0.0-alpha.1, < 42.0.0-alpha.5 Not specified

References

ReferenceSourceLinkTags
github.com/electron/electron/security/advisories/GHSA-f37v-82c4-4x64 [email protected] github.com
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