Bug 2483157 (CVE-2026-10052)

Summary: CVE-2026-10052 quay/config-tool: quay/config-tool: SSRF via unfiltered LDAP and SMTP config validation endpoints
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: low    
Version: unspecifiedCC: bdettelb, doconnor
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in the Quay config-tool's LDAP and SMTP validation functions. An attacker with config editor access can exploit these functions, which make outbound connections to user-supplied endpoints without proper IP or host filtering. This allows the attacker to perform internal network reconnaissance from the Quay pod's network position, potentially mapping the internal network infrastructure.
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Description OSIDB Bzimport 2026-05-29 07:35:17 UTC 
The Quay config-tool's LDAP and SMTP validation functions in pkg/lib/shared/validators.go make outbound connections to user-supplied endpoints with no IP/host filtering. ValidateEmailServer calls net.DialTimeout to the configured mail server, and ValidateLDAPServer calls ldap.DialURL to the configured LDAP URI. An attacker with config editor access (HTTP Basic Auth on the config-tool editor, Quay <= 3.16) can exploit these to perform internal network reconnaissance from the Quay pod's network position. The config editor web application was removed in Quay 3.17, limiting the attack vector to CLI or container startup in newer versions. The LDAP validator also accepts the ldapi:// scheme and reflects LDAP result codes in error messages. The GitLab OAuth validator separately exposes client_secret in URL querystrings (CWE-598).