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Vulnerability details: VCID-zshp-exa5-q3dj
Vulnerability ID VCID-zshp-exa5-q3dj
Aliases CVE-2016-10536
GHSA-4r4m-hjwj-43p8
Summary Insecure Defaults Allow MITM Over TLS in engine.io-client
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (4)
CWE-300 Channel Accessible by Non-Endpoint
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-295 Improper Certificate Validation
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2016-10536
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2016-10536
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2016-10536
epss 0.00225 https://api.first.org/data/v1/epss?cve=CVE-2016-10536
cvssv3.1 5.9 https://github.com/advisories/GHSA-4r4m-hjwj-43p8
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-4r4m-hjwj-43p8
generic_textual MODERATE https://github.com/advisories/GHSA-4r4m-hjwj-43p8
cvssv3.1 5.9 https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1
generic_textual MODERATE https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1
cvssv3.1 5.9 https://nvd.nist.gov/vuln/detail/CVE-2016-10536
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2016-10536
cvssv3.1 5.9 https://www.cigital.com/blog/node-js-socket-io
generic_textual MODERATE https://www.cigital.com/blog/node-js-socket-io
cvssv3.1 5.9 https://www.npmjs.com/advisories/99
generic_textual MODERATE https://www.npmjs.com/advisories/99
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2016-10536
https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1
https://www.cigital.com/blog/node-js-socket-io
https://www.cigital.com/blog/node-js-socket-io/
https://www.npmjs.com/advisories/99
CVE-2016-10536 https://nvd.nist.gov/vuln/detail/CVE-2016-10536
GHSA-4r4m-hjwj-43p8 https://github.com/advisories/GHSA-4r4m-hjwj-43p8
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/advisories/GHSA-4r4m-hjwj-43p8
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://github.com/socketio/engine.io-client/commit/2c55b278a491bf45313ecc0825cf800e2f7ff5c1
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-10536
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://www.cigital.com/blog/node-js-socket-io
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://www.npmjs.com/advisories/99
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.45311
EPSS Score 0.00225
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:25:02.074603+00:00 GHSA Importer Import https://github.com/advisories/GHSA-4r4m-hjwj-43p8 38.6.0