{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-18047","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-07-28T10:15:23.892Z","datePublished":"2026-07-28T12:44:24.682Z","dateUpdated":"2026-07-28T13:26:27.569Z"},"containers":{"cna":{"title":"Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash","metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in Dogtag PKI's ACME responder where the web.xml security constraints use exact URL pattern matching for admin-only enable/disable endpoints. By appending a trailing slash to the URL, an unauthenticated attacker can bypass the Tomcat authentication constraint while RESTEasy still routes the request to the handler, allowing unauthorized toggling of the ACME service state including persistent denial of service."}],"affected":[{"vendor":"Red Hat","product":"Red Hat Certificate System 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-pki:10/redhat-pki","defaultStatus":"affected","cpes":["cpe:/a:redhat:certificate_system:10"]},{"vendor":"Red Hat","product":"Red Hat Certificate System 11","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-pki","defaultStatus":"affected","cpes":["cpe:/a:redhat:certificate_system:11"]},{"vendor":"Red Hat","product":"Red Hat Certificate System 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"pki-core","defaultStatus":"unknown","cpes":["cpe:/a:redhat:certificate_system:9"]},{"vendor":"Red Hat","product":"Red Hat Certificate System 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"redhat-pki","defaultStatus":"unknown","cpes":["cpe:/a:redhat:certificate_system:9"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 10","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"dogtag-pki","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 6","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"pki-core","defaultStatus":"unknown","cpes":["cpe:/o:redhat:enterprise_linux:6"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"pki-core","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:7"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 8","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"pki-core:10.6/pki-core","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"]},{"vendor":"Red Hat","product":"Red Hat Enterprise Linux 9","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"pki-core","defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-18047","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2507956","name":"RHBZ#2507956","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-07-28T10:36:31.625Z","problemTypes":[{"descriptions":[{"cweId":"CWE-288","description":"Authentication Bypass Using an Alternate Path or Channel","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-288: Authentication Bypass Using an Alternate Path or Channel","workarounds":[{"lang":"en","value":"To mitigate this vulnerability, change the URL patterns in the ACME responder's web.xml from exact-match to prefix-match.\nEdit the file /usr/share/pki/acme/webapps/acme/WEB-INF/web.xml and replace the url-pattern entries for the enable and disable endpoints:\n\n<url-pattern>/enable</url-pattern>  ->  <url-pattern>/enable/*</url-pattern>\n<url-pattern>/disable</url-pattern> ->  <url-pattern>/disable/*</url-pattern>\n\nThen restart the PKI server for the changes to take effect."}],"timeline":[{"lang":"en","time":"2026-07-28T10:23:25.823Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-07-28T10:36:31.625Z","value":"Made public."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-07-28T13:23:30.625Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-28T13:26:20.679235Z","id":"CVE-2026-18047","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-28T13:26:27.569Z"}}]}}