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Fulcio

2 CVEs product

Monthly

CVE-2026-22772 Go MEDIUM POC PATCH This Month

Fulcio versions prior to 1.8.5 allow unauthenticated attackers to bypass MetaIssuer URL validation through unanchored regex patterns, enabling blind SSRF attacks against internal services. Although the vulnerability is limited to read-only GET requests with no response exfiltration, attackers can probe internal networks to discover active services and infrastructure. Public exploit code exists for this medium-severity issue, and a patch is available in version 1.8.5.

SSRF Fulcio Red Hat Suse
NVD GitHub
CVSS 3.1
5.8
EPSS
0.0%
CVE-2025-66506 Go HIGH PATCH This Week

A security vulnerability in Fulcio (CVSS 7.5). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Information Disclosure Ubuntu Debian Fulcio Red Hat +1
NVD GitHub
CVSS 3.1
7.5
EPSS
0.0%
EPSS 0% CVSS 5.8
MEDIUM POC PATCH This Month

Fulcio versions prior to 1.8.5 allow unauthenticated attackers to bypass MetaIssuer URL validation through unanchored regex patterns, enabling blind SSRF attacks against internal services. Although the vulnerability is limited to read-only GET requests with no response exfiltration, attackers can probe internal networks to discover active services and infrastructure. Public exploit code exists for this medium-severity issue, and a patch is available in version 1.8.5.

SSRF Fulcio Red Hat +1
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

A security vulnerability in Fulcio (CVSS 7.5). High severity vulnerability requiring prompt remediation. Vendor patch is available.

Information Disclosure Ubuntu Debian +3
NVD GitHub

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