CVE-2016-10534
SSL Validation Defaults to False in electron-packager
electron-packager is a command line tool that packages Electron source code into .app and .exe packages. along with Electron. The --strict-ssl command line option in electron-packager >= 5.2.1 <= 6.0.0 || >=6.0.0 <= 6.0.2 defaults to false if not explicitly set to true. This could allow an attacker to perform a man in the middle attack.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- High
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
electron-packager is a command line tool that packages Electron source code into .app and .exe packages. along with Electron. The --strict-ssl command line option in electron-packager >= 5.2.1 <= 6.0.0 || >=6.0.0 <= 6.0.2 defaults to false if not explicitly set to true. This could allow an attacker to perform a man in the middle attack.
- Record
CVE-2016-10534- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-295
- Updated
- 2026-11-02
CVE List No score
electron-packager is a command line tool that packages Electron source code into .app and .exe packages. along with Electron. The --strict-ssl command line option in electron-packager >= 5.2.1 <= 6.0.0 || >=6.0.0 <= 6.0.2 defaults to false if not explicitly set to true. This could allow an attacker to perform a man in the middle attack.
- Record
CVE-2016-10534- Weakness
- CWE-295
- Updated
- 2026-11-02
EUVDEUVD-2019-0326 No score
electron-packager is a command line tool that packages Electron source code into .app and .exe packages. along with Electron. The --strict-ssl command line option in electron-packager >= 5.2.1 <= 6.0.0 || >=6.0.0 <= 6.0.2 defaults to false if not explicitly set to true. This could allow an attacker to perform a man in the middle attack.
- Record
EUVD-2019-0326- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-q43m-ffwr-rpcc No score
SSL Validation Defaults to False in electron-packager
Affected versions of electron-packager configure the generated application to disable SSL certificate verification by default.
This could allow an attacker with a privileged network position to launch a Man In The Middle (MITM) attack on the install process, intercepting the step where electron-packager downloads Electron for supported target platforms and architectures, and replacing the valid download with a tampered malicious one.
This only affects users using the electron-packager CLI. The strict-ssl option defaults to true for the node.js API.
Recommendation
- Update to version 7.0.0 or later.
- Delete the
electron-downloadcache folder, which is by default located at~/.electron.
- Record
GHSA-q43m-ffwr-rpcc- Weakness
- CWE-295
- Updated
- 2026-11-02
OSV
electron-packager is a command line tool that packages Electron source code into .app and .exe packages. along with Electron. The --strict-ssl command line option in electron-packager >= 5.2.1 <= 6.0.0 || >=6.0.0 <= 6.0.2 defaults to false if not explicitly set to true. This could allow an attacker to perform a man in the middle attack.
- Record
CVE-2016-10534- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N - Updated
- 2026-11-02
OSVGHSA-q43m-ffwr-rpcc No score
SSL Validation Defaults to False in electron-packager
Affected versions of electron-packager configure the generated application to disable SSL certificate verification by default.
This could allow an attacker with a privileged network position to launch a Man In The Middle (MITM) attack on the install process, intercepting the step where electron-packager downloads Electron for supported target platforms and architectures, and replacing the valid download with a tampered malicious one.
This only affects users using the electron-packager CLI. The strict-ssl option defaults to true for the node.js API.
Recommendation
- Update to version 7.0.0 or later.
- Delete the
electron-downloadcache folder, which is by default located at~/.electron.
- Record
GHSA-q43m-ffwr-rpcc- Weakness
- CWE-295
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
electron-packagernpm |
5.2.1 up to 7.0.0 | 7.0.0 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2016-10534 is a medium vulnerability (CVSS 5.9) in Electron-packager Project Electron-packager, published May 31, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.94%, the 61st percentile. Fixed in electron-packager 7.0.0.