MEDIUM 5.8 NVD
CVE-2026-18369
A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects
A flaw was found in Dogtag PKI's ACME responder where the HTTP-01 challenge validator accepts IP address literals as dns identifiers and follows HTTP redirects without validating that the target is a public address. An unauthenticated ACME account holder can exploit this to perform server-side request forgery (SSRF), making the Dogtag server send HTTP GET requests to internal network services. With the InMemory database backend, the response body of internal targets is disclosed to the attacker through the ACME challenge error.
References
- https://access.redhat.com/security/cve/CVE-2026-18369
- https://bugzilla.redhat.com/show_bug.cgi?id=2509234
This medium severity vulnerability with a CVSS score of 5.8 was published on 2026-07-30 via NVD.
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