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Vulnerability details: VCID-34vx-bf9f-hugc
Vulnerability ID VCID-34vx-bf9f-hugc
Aliases CVE-2018-8276
GHSA-wg47-6cqc-q52j
Summary ChakraCore Security Bypass A security feature bypass vulnerability exists in the Microsoft Chakra scripting engine that allows Control Flow Guard (CFG) to be bypassed, aka "Scripting Engine Security Feature Bypass Vulnerability." This affects Microsoft Edge, ChakraCore.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.15827 https://api.first.org/data/v1/epss?cve=CVE-2018-8276
cvssv3.1 6.5 https://github.com/chakra-core/ChakraCore
generic_textual MODERATE https://github.com/chakra-core/ChakraCore
cvssv3.1 6.5 https://github.com/chakra-core/ChakraCore/commit/4196f8097afdcc5fe01ce2966871712fb24003a3
generic_textual MODERATE https://github.com/chakra-core/ChakraCore/commit/4196f8097afdcc5fe01ce2966871712fb24003a3
cvssv3.1 6.5 https://nvd.nist.gov/vuln/detail/CVE-2018-8276
generic_textual MODERATE https://nvd.nist.gov/vuln/detail/CVE-2018-8276
cvssv3.1 6.5 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276
generic_textual MODERATE https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276
cvssv3.1 6.5 https://web.archive.org/web/20210124183457/http://www.securityfocus.com/bid/104626
generic_textual MODERATE https://web.archive.org/web/20210124183457/http://www.securityfocus.com/bid/104626
cvssv3.1 6.5 https://web.archive.org/web/20211202002348/http://www.securitytracker.com/id/1041256
generic_textual MODERATE https://web.archive.org/web/20211202002348/http://www.securitytracker.com/id/1041256
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2018-8276
https://github.com/chakra-core/ChakraCore
https://github.com/chakra-core/ChakraCore/commit/4196f8097afdcc5fe01ce2966871712fb24003a3
https://web.archive.org/web/20210124183457/http://www.securityfocus.com/bid/104626
https://web.archive.org/web/20211202002348/http://www.securitytracker.com/id/1041256
CVE-2018-8276 https://nvd.nist.gov/vuln/detail/CVE-2018-8276
CVE-2018-8276 https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276
GHSA-wg47-6cqc-q52j https://github.com/advisories/GHSA-wg47-6cqc-q52j
No exploits are available.
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/chakra-core/ChakraCore
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://github.com/chakra-core/ChakraCore/commit/4196f8097afdcc5fe01ce2966871712fb24003a3
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2018-8276
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8276
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://web.archive.org/web/20210124183457/http://www.securityfocus.com/bid/104626
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:L/PR:N/UI:R/S:U/C:N/I:H/A:N Found at https://web.archive.org/web/20211202002348/http://www.securitytracker.com/id/1041256
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 0.94851
EPSS Score 0.15827
Published At May 30, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-05-30T20:58:27.769983+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/nuget/Microsoft.ChakraCore/CVE-2018-8276.yml 38.6.0