CVE-2025-54803

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

j

s-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2.

References

Link	Resource
https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc	Exploit
https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66	Patch
https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2	Vendor Advisory
https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc	Exploit

Configurations

Configuration 1 (hide)

cpe:2.3:a:sunnyadn:js-toml:*:*:*:*:*:node.js:*:*

History

09 Oct 2025, 17:32

Type	Values Removed	Values Added
First Time		Sunnyadn js-toml Sunnyadn
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
References	~~() https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc -~~	() https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc - Exploit
References	~~() https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66 -~~	() https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66 - Patch
References	~~() https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2 -~~	() https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2 - Vendor Advisory
CPE		cpe:2.3:a:sunnyadn:js-toml::::::node.js::*

05 Aug 2025, 15:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2025-08-05 01:15

Updated : 2025-10-09 17:32

NVD link : CVE-2025-54803

Mitre link : CVE-2025-54803

CVE.ORG link : CVE-2025-54803

JSON object : View

Products Affected

js-toml

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

{"id": "CVE-2025-54803", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Primary", "source": "[email protected]", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}], "cvssMetricV40": [{"type": "Secondary", "source": "[email protected]", "cvssData": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 7.9, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "HIGH", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "exploitMaturity": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "subIntegrityImpact": "HIGH", "vulnIntegrityImpact": "NONE", "integrityRequirement": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "subAvailabilityImpact": "HIGH", "vulnAvailabilityImpact": "NONE", "availabilityRequirement": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "subConfidentialityImpact": "HIGH", "vulnConfidentialityImpact": "NONE", "confidentialityRequirement": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED"}}]}, "published": "2025-08-05T01:15:42.400", "references": [{"url": "https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc", "tags": ["Exploit"], "source": "[email protected]"}, {"url": "https://github.com/sunnyadn/js-toml/commit/b125910a3f094b744c9c3571360d4b9e3a472f66", "tags": ["Patch"], "source": "[email protected]"}, {"url": "https://github.com/sunnyadn/js-toml/security/advisories/GHSA-65fc-cr5f-v7r2", "tags": ["Vendor Advisory"], "source": "[email protected]"}, {"url": "https://gist.github.com/siunam321/f3dc4d21a5a932c67b6c11d0026f5afc", "tags": ["Exploit"], "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "[email protected]", "description": [{"lang": "en", "value": "CWE-1321"}]}], "descriptions": [{"lang": "en", "value": "js-toml is a TOML parser for JavaScript, fully compliant with the TOML 1.0.0 Spec. In versions below 1.0.2, a prototype pollution vulnerability in js-toml allows a remote attacker to add or modify properties of the global Object.prototype by parsing a maliciously crafted TOML input. This is fixed in version 1.0.2."}, {"lang": "es", "value": "js-toml es un analizador TOML para JavaScript, totalmente compatible con la especificaci\u00f3n TOML 1.0.0. En versiones anteriores a la 1.0.2, una vulnerabilidad de contaminaci\u00f3n de prototipos en js-toml permite a un atacante remoto a\u00f1adir o modificar propiedades del Object.prototype global mediante el an\u00e1lisis de una entrada TOML maliciosa. Esto se corrigi\u00f3 en la versi\u00f3n 1.0.2."}], "lastModified": "2025-10-09T17:32:53.573", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:sunnyadn:js-toml:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "4B607E8C-97F6-4FE2-9EE2-939701D6E471", "versionEndExcluding": "1.0.2"}], "operator": "OR"}]}], "sourceIdentifier": "[email protected]"}