🛡️ CVE-2025-55164
🟠 CVSS 8.0 — High ✅ No Known Exploit CWE-1321 NVD
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector 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
CWE CWE-1321
Public Exploit ✅ No
Source NVD
Published 2025-08-12
Updated 2026-06-02
Modified 2025-08-12
Fix URL N/A

Affected Packages

Software From version Fixed in
content-security-policy-parser
unknown

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