{"id":"CVE-2026-18369","title":"Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects","summary":"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 AC…","severity":"medium","cvss":5.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-918"],"vendor":"Red Hat","product":"redhat-pki:10","affected":["redhat-pki:10 (all versions)","redhat-pki:10/redhat-pki (all versions)","redhat-pki (all versions)","pki-core (all versions)","redhat-pki (all versions)","dogtag-pki (all versions)","pki-core (all versions)","pki-core (all versions)","pki-core:10.6/pki-core (all versions)","pki-core (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-07-30T13:43:45.999638Z"},"published":"2026-07-30","updated":"2026-09-14","sourceUpdated":"2026-09-14T05:28:08.089Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-18369","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:67110","label":"RHSA-2026:67110"},{"url":"https://access.redhat.com/security/cve/CVE-2026-18369"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2509234","label":"RHBZ#2509234"}],"tags":["cve.org"],"epss":0.00224,"epssPercentile":0.13322,"ingestedAt":"2026-09-14T15:23:07.465Z","slug":"CVE-2026-18369","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `redhat-pki:10 (all versions)`\n- `redhat-pki:10/redhat-pki (all versions)`\n- `redhat-pki (all versions)`\n- `pki-core (all versions)`\n- `redhat-pki (all versions)`\n- `dogtag-pki (all versions)`\n- `pki-core (all versions)`\n- `pki-core (all versions)`\n- `pki-core:10.6/pki-core (all versions)`\n- `pki-core (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":32,"depthScoreParts":{"impact":31.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}