CVE-2026-34780 Vulnerability Analysis & Exploit Details

CVE-2026-34780
Vulnerability Scoring

8.3

/10

Severe Risk

Cybersecurity professionals consider CVE-2026-34780 an immediate threat requiring urgent mitigation.

Attack Complexity Details

Attack Complexity: High
Exploits require significant effort and special conditions.
Attack Vector: Network
Vulnerability is exploitable over a network without physical access.
Privileges Required: None
No privileges are required for exploitation.
Scope: Changed
Successful exploitation can impact components beyond the vulnerable component.
User Interaction: Required
User interaction is necessary for successful exploitation.

CVE-2026-34780 Details

Status: Analyzed

Last updated: 🕖 14 Apr 2026, 19:02 UTC
Originally published on: 🕐 04 Apr 2026, 01:16 UTC

Time between publication and last update: 10 days

CVSS Release: version 3

CVSS3 Source

security-advisories@github.com

CVSS3 Type

Secondary

CVSS3 Vector

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

CVE-2026-34780 Vulnerability Summary

CVE-2026-34780: Electron is a framework for writing cross-platform desktop applications using JavaScript, HTML and CSS. From versions 39.0.0-alpha.1 to before 39.8.0, 40.0.0-alpha.1 to before 40.7.0, and 41.0.0-alpha.1 to before 41.0.0-beta.8, apps that pass VideoFrame objects (from the WebCodecs API) across the contextBridge are vulnerable to a context isolation bypass. An attacker who can execute JavaScript in the main world (for example, via XSS) can use a bridged VideoFrame to gain access to the isolated world, including any Node.js APIs exposed to the preload script. Apps are only affected if a preload script returns, resolves, or passes a VideoFrame object to the main world via contextBridge.exposeInMainWorld(). Apps that do not bridge VideoFrame objects are not affected. This issue has been patched in versions 39.8.0, 40.7.0, and 41.0.0-beta.8.

Assessing the Risk of CVE-2026-34780

Access Complexity Graph

The exploitability of CVE-2026-34780 depends on two key factors: attack complexity (the level of effort required to execute an exploit) and privileges required (the access level an attacker needs).

Exploitability Analysis for CVE-2026-34780

CVE-2026-34780 presents a challenge to exploit due to its high attack complexity, but the absence of privilege requirements still makes it a viable target for skilled attackers. A thorough security review is advised.

Understanding AC and PR

A lower complexity and fewer privilege requirements make exploitation easier. Security teams should evaluate these aspects to determine the urgency of mitigation strategies, such as patch management and access control policies.

Attack Complexity (AC) measures the difficulty in executing an exploit. A high AC means that specific conditions must be met, making an attack more challenging, while a low AC means the vulnerability can be exploited with minimal effort.

Privileges Required (PR) determine the level of system access necessary for an attack. Vulnerabilities requiring no privileges are more accessible to attackers, whereas high privilege requirements limit exploitation to authorized users with elevated access.

CVSS Score Breakdown Chart

Above is the CVSS Sub-score Breakdown for CVE-2026-34780, illustrating how Base, Impact, and Exploitability factors combine to form the overall severity rating. A higher sub-score typically indicates a more severe or easier-to-exploit vulnerability.

CIA Impact Analysis

Below is the Impact Analysis for CVE-2026-34780, showing how Confidentiality, Integrity, and Availability might be affected if the vulnerability is exploited. Higher values usually signal greater potential damage.

Confidentiality: High
Exploiting CVE-2026-34780 can result in unauthorized access to sensitive data, severely compromising data privacy.
Integrity: High
CVE-2026-34780 could allow unauthorized modifications to data, potentially affecting system reliability and trust.
Availability: High
CVE-2026-34780 can disrupt system operations, potentially causing complete denial of service (DoS).

CVE-2026-34780 References

External References

https://github.com/electron/electron/security/advisories/GHSA-jfqg-hf23-qpw2

CWE Common Weakness Enumeration

CWE-1188

CAPEC Common Attack Pattern Enumeration and Classification

Exploitation of Thunderbolt Protection Flaws CAPEC-665 An adversary leverages a firmware weakness within the Thunderbolt protocol, on a computing device to manipulate Thunderbolt controller firmware in order to exploit vulnerabilities in the implementation of authorization and verification schemes within Thunderbolt protection mechanisms. Upon gaining physical access to a target device, the adversary conducts high-level firmware manipulation of the victim Thunderbolt controller SPI (Serial Peripheral Interface) flash, through the use of a SPI Programing device and an external Thunderbolt device, typically as the target device is booting up. If successful, this allows the adversary to modify memory, subvert authentication mechanisms, spoof identities and content, and extract data and memory from the target device. Currently 7 major vulnerabilities exist within Thunderbolt protocol with 9 attack vectors as noted in the Execution Flow.

Vulnerable Configurations

cpe:2.3:a:electronjs:electron:39.0.0:-:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:-:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.0:alpha9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.0.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.1.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.3:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.3:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.4:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.4:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.5:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.5:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.6:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.6:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.7:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.2.7:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.4.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.4.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.5.2:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.7.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:39.7.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:-:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:-:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:beta9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha8:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.0.0:alpha9:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.1.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.2.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.2.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.2.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.3.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.4.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.4.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.4.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.4.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.5.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.6.0:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:40.6.1:*:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:alpha6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta1:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta2:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta3:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta4:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta5:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta6:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:*
cpe:2.3:a:electronjs:electron:41.0.0:beta7:*:*:*:node.js:*:*

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