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Vulnerability details: VCID-jfqz-zcs9-2yby
Vulnerability ID VCID-jfqz-zcs9-2yby
Aliases CVE-2023-26121
GHSA-hcg3-56jf-x4vh
Summary safe-eval vulnerable to Prototype Pollution via the safeEval function All versions of the package safe-eval is vulnerable to Prototype Pollution via the safeEval function, due to improper sanitization of its parameter content.
Status Published
Exploitability 0.5
Weighted Severity 9.0
Risk 4.5
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00349 https://api.first.org/data/v1/epss?cve=CVE-2023-26121
epss 0.00349 https://api.first.org/data/v1/epss?cve=CVE-2023-26121
cvssv3.1 10.0 https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
cvssv3.1 7.5 https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
generic_textual CRITICAL https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
ssvc Track https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
cvssv3.1 10.0 https://github.com/hacksparrow/safe-eval
generic_textual CRITICAL https://github.com/hacksparrow/safe-eval
cvssv3.1 10.0 https://github.com/hacksparrow/safe-eval/issues/28
cvssv3.1 7.5 https://github.com/hacksparrow/safe-eval/issues/28
generic_textual CRITICAL https://github.com/hacksparrow/safe-eval/issues/28
ssvc Track https://github.com/hacksparrow/safe-eval/issues/28
cvssv3.1 10.0 https://nvd.nist.gov/vuln/detail/CVE-2023-26121
generic_textual CRITICAL https://nvd.nist.gov/vuln/detail/CVE-2023-26121
cvssv3.1 10.0 https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
cvssv3.1 7.5 https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
generic_textual CRITICAL https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
ssvc Track https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2023-26121
https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
https://github.com/hacksparrow/safe-eval
https://github.com/hacksparrow/safe-eval/issues/28
https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
CVE-2023-26121 https://nvd.nist.gov/vuln/detail/CVE-2023-26121
GHSA-hcg3-56jf-x4vh https://github.com/advisories/GHSA-hcg3-56jf-x4vh
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P Found at https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
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: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-10T15:16:22Z/ Found at https://gist.github.com/seongil-wi/9d9fc0cc5b7b130419cd45827e59c4f9
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://github.com/hacksparrow/safe-eval
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://github.com/hacksparrow/safe-eval/issues/28
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P Found at https://github.com/hacksparrow/safe-eval/issues/28
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: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-10T15:16:22Z/ Found at https://github.com/hacksparrow/safe-eval/issues/28
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2023-26121
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:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H Found at https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P Found at https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
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: SSVCv2/E:P/A:Y/T:P/P:M/B:A/M:M/D:T/2025-02-10T15:16:22Z/ Found at https://security.snyk.io/vuln/SNYK-JS-SAFEEVAL-3373062
Exploit Prediction Scoring System (EPSS)
Percentile 0.57658
EPSS Score 0.00349
Published At June 4, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-02T04:44:29.127214+00:00 GitLab Importer Import https://gitlab.com/gitlab-org/advisories-community/-/blob/main/npm/safe-eval/CVE-2023-26121.yml 38.6.0