Staging Environment: Content and features may be unstable or change without notice.
Search for vulnerabilities
Vulnerability details: VCID-j746-mtrg-97gc
Vulnerability ID VCID-j746-mtrg-97gc
Aliases CVE-2024-21524
GHSA-g533-xq5w-jmf3
Summary All versions of the package node-stringbuilder are vulnerable to Out-of-bounds Read due to incorrect memory length calculation, by calling ToBuffer, ToString, or CharAt on a StringBuilder object with a non-empty string value input. It's possible to return previously allocated memory, for example, by providing negative indexes, leading to an Information Disclosure.
Status Published
Exploitability 0.5
Weighted Severity 8.0
Risk 4.0
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-125 Out-of-bounds Read
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 0.00211 https://api.first.org/data/v1/epss?cve=CVE-2024-21524
epss 0.00211 https://api.first.org/data/v1/epss?cve=CVE-2024-21524
cvssv3.1 8.2 https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
cvssv3.1 8.2 https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
cvssv4 8.8 https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
generic_textual HIGH https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
ssvc Track https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
cvssv3.1_qr HIGH https://github.com/advisories/GHSA-g533-xq5w-jmf3
cvssv3.1 8.2 https://github.com/magiclen/node-stringbuilder
cvssv4 8.8 https://github.com/magiclen/node-stringbuilder
generic_textual HIGH https://github.com/magiclen/node-stringbuilder
cvssv3.1 8.2 https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
ssvc Track https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
cvssv3.1 8.2 https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
cvssv4 8.8 https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
generic_textual HIGH https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
cvssv3.1 8.2 https://nvd.nist.gov/vuln/detail/CVE-2024-21524
cvssv4 8.8 https://nvd.nist.gov/vuln/detail/CVE-2024-21524
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2024-21524
cvssv3.1 8.2 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
cvssv3.1 8.2 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
cvssv4 8.8 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
generic_textual HIGH https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
ssvc Track https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2024-21524
https://github.com/magiclen/node-stringbuilder
https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
0bb022811224f81d998fa61c3175ee67 https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
CVE-2024-21524 https://nvd.nist.gov/vuln/detail/CVE-2024-21524
GHSA-g533-xq5w-jmf3 https://github.com/advisories/GHSA-g533-xq5w-jmf3
node-stringbuilder.c%23L1281 https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
SNYK-JS-NODESTRINGBUILDER-6421617 https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P Found at https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
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:L/I:N/A:H Found at https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

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/2024-07-12T16:26:50Z/ Found at https://gist.github.com/dellalibera/0bb022811224f81d998fa61c3175ee67
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Found at https://github.com/magiclen/node-stringbuilder
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/magiclen/node-stringbuilder
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P Found at https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
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/2024-07-12T16:26:50Z/ Found at https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c%23L1281
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Found at https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://github.com/magiclen/node-stringbuilder/blob/5c2797d3d6bf8cb6d10fe1e077609cef9a5a7de0/src/node-stringbuilder.c#L1281
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H Found at https://nvd.nist.gov/vuln/detail/CVE-2024-21524
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2024-21524
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H/E:P Found at https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
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:L/I:N/A:H Found at https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
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:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N Found at https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

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/2024-07-12T16:26:50Z/ Found at https://security.snyk.io/vuln/SNYK-JS-NODESTRINGBUILDER-6421617
Exploit Prediction Scoring System (EPSS)
Percentile 0.43665
EPSS Score 0.00211
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-10T18:38:54.248182+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2024/21xxx/CVE-2024-21524.json 38.6.0