CVE-2025-55164

CVE-2025-55164 is a unknown severity vulnerability affecting the affected product.

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 […]

Affected Versions:
❌ Vulnerable: ≤ 0.5.0
✅ Safe: ≥ 0.5.1

Exploit Difficulty: HARD
⏱️ Time to exploit: > 4 hours
🛠️ Required skills: Advanced security expertise
💰 Public exploits: Rare or not public

How to Fix:


- Check if you're running the affected product
- Verify version (vulnerable: ≤ 0.5.0)


- Update to ≥ 0.5.1 or later
- If patching is not immediately possible: restrict network exposure, apply least-privilege access


- Test the fix in a staging environment first
- Review logs for signs of exploitation
- Monitor for IOCs (Indicators of Compromise)


- Enable automatic security updates
- Set up vulnerability monitoring
- Review and harden security configurations