CVE-2025-55164: fallo de gravedad alta en helmetjs content-security-policy-parser
content-security-policy-parser Prototype Pollution Vulnerability May Lead to RCE
Publicada el · Actualizada el
Seguir esta CVE+ Monitorear content-security-policy-parser+ Monitorear content-security-policy-parser
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 8.8epss 0.5%
content-security-policy-parser parses content security policy directives. A prototype pollution vulnerability exists in versions 0.5.0 and earlier, wherein if a policy name is called __proto__, one can override the Object prototype. This issue has been patched in version 0.6.0. A workaround involves disabling prototype method in NodeJS, neutralizing all possible prototype pollution attacks. Provide either --disable-proto=delete (recommended) or --disable-proto=throw as an argument to node to enable this feature.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
Productos afectados
helmetjs · content-security-policy-parserReferencias
https://github.com/helmetjs/content-security-policy-parser/commit/b13a52554f0168af393e3e38ed4a94e9e6aea9dchttps://github.com/helmetjs/content-security-policy-parser/issues/11https://github.com/helmetjs/content-security-policy-parser/security/advisories/GHSA-w2cq-g8g3-gm83https://www.vicarius.io/vsociety/posts/cve-2025-55164-detect-node-csp-parser-vulnerabilityhttps://www.vicarius.io/vsociety/posts/cve-2025-55164-mitigate-csp-parser-vulnerability