CVE-2025-55164 — content-security-policy-parser Prototype Pollution Vulnerability May Lead to RCE
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 c…
Published: 2025-08-12 · CVSS: 8.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7