CVE-2020-37056

CRITICAL

9.8

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.

Details CVE

Score CVSS v3.19.8

SeveriteCRITICAL

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie1/30/2026

Derniere modification2/3/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-290

References

https://github.com/rogeriozambon/http-protection(disclosure@vulncheck.com)

https://www.exploit-db.com/exploits/48533(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/crystal-shard-http-protection-ip-spoofing-bypass(disclosure@vulncheck.com)

Correlations IOC

Aucune correlation enregistree

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