Crystal Shard http-protection 0.2.0 contains an IP spoofing vulnerability that allows attackers to bypass protection middleware by manipulating request headers. Attackers can hardcode consistent IP values across X-Forwarded-For, X-Client-IP, and X-Real-IP headers to circumvent security checks and gain unauthorized access.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.0002.

Exploitation poc

Automatable yes

Technical Impact total

Affected Vendors & Products

Vendors Products
Crystal Shard Subscribe
Http-protection Subscribe

No data.

No data.

OpenCVE Enrichment is a feature of OpenCVE that uses AI to automatically link vendors and products to CVEs. Learn more on GitHub.

Vendors Products
Crystal Shard Subscribe
Http-protection Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/rogeriozambon/http-protection cve-icon cve-icon
https://www.exploit-db.com/exploits/48533 cve-icon cve-icon
https://www.vulncheck.com/advisories/crystal-shard-http-protection-ip-spoofing-bypass cve-icon cve-icon
History

Tue, 03 Feb 2026 15:00:00 +0000

Type Values Removed Values Added
First Time appeared Crystal Shard
Crystal Shard http-protection
Vendors & Products Crystal Shard
Crystal Shard http-protection

Tue, 03 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Fri, 30 Jan 2026 22:30:00 +0000

Type Values Removed Values Added
Description Crystal Shard http-protection 0.2.0 contains an IP spoofing vulnerability that allows attackers to bypass protection middleware by manipulating request headers. Attackers can hardcode consistent IP values across X-Forwarded-For, X-Client-IP, and X-Real-IP headers to circumvent security checks and gain unauthorized access.
Title Crystal Shard http-protection 0.2.0 - IP Spoofing Bypass
Weaknesses CWE-290
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-02-02T20:07:10.914Z

Reserved: 2026-01-28T18:18:30.526Z

Link: CVE-2020-37056

cve-icon Vulnrichment

Updated: 2026-02-02T20:07:07.099Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-01-30T23:16:11.630

Modified: 2026-02-03T16:44:36.630

Link: CVE-2020-37056

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-02-02T09:26:48Z

Weaknesses