CVE-2025-55164 (GCVE-0-2025-55164)
Vulnerability from cvelistv5 – Published: 2025-08-12 16:02 – Updated: 2025-08-20 19:39
VLAI
EPSS
VEX
Title
content-security-policy-parser Prototype Pollution Vulnerability May Lead to RCE
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-08-12 17:52 UTC
CWE
- CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
Assigner
GitHub_M
CNA
References
5 references
| URL | Tags |
|---|---|
| https://github.com/helmetjs/content-security-poli… | x_refsource_CONFIRM |
| https://github.com/helmetjs/content-security-poli… | x_refsource_MISC |
| https://github.com/helmetjs/content-security-poli… | x_refsource_MISC |
| https://www.vicarius.io/vsociety/posts/cve-2025-5… | |
| https://www.vicarius.io/vsociety/posts/cve-2025-5… |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| helmetjs | content-security-policy-parser |
Affected:
< 0.6.0
|
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Browse all ATT&CK techniques and the vulnerabilities related to each.
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