CVE-2023-29198Network attack vector

Context isolation bypass via unserializable bridge returns

Published Sep 6, 2023 · Updated Sep 26, 2024

Context isolation bypass in affected Electron releases allows attackers to perform privileged actions through a renderer. When an exposed contextBridge API returns a nested unserializable object or a getter throws during transfer, bridge error handling leaves main-world code able to reach the isolated context. Exploitation requires contextIsolation and contextBridge plus a reachable API with one of those exceptional return paths; resulting actions are limited to privileges available in the isolated context.

CVSS severity6.0
Medium
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Context isolation bypass in affected Electron releases allows attackers to perform privileged actions through a renderer. When an exposed contextBridge API returns a nested unserializable object or a getter throws during transfer, bridge error handling leaves main-world code able to reach the isolated context. Exploitation requires contextIsolation and contextBridge plus a reachable API with one of those exceptional return paths; resulting actions are limited to privileges available in the isolated context.

The record

CVE
CVE-2023-29198
Published
Sep 6, 2023
Updated
Sep 26, 2024
Vendor
Electron
Product
Electron
Classifications
CWE-754, T1203
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Sep 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 26, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 22.3.6
  2. Affected versionversion=>= 23.0.0, < 23.2.3
  3. Affected versionversion=>= 24.0.0, < 24.0.1
  4. Affected versionversion=>= 25.0.0-alpha.1, < 25.0.0-alpha.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Electron · Electronversion=< 22.3.6; version=>= 23.0.0, < 23.2.3; version=>= 24.0.0, < 24.0.1; version=>= 25.0.0-alpha.1, < 25.0.0-alpha.2

Published CVSS scores

6.0GitHub CNACVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:L
8.5GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-754Improper Check for Unusual or Exceptional Conditions
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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