{"id":"CVE-2026-11873","title":"Pki-core: dogtag-pki: empty request to dogtag /ca/rest/certrequests causes http 500, java exception, and stacktrace disclosure","summary":"An Apache-proxied Dogtag CA REST endpoint exposed by IdM (POST /ca/rest/certrequests) returns HTTP 500 with internal Java stack traces for unauthenticated malformed requests. The same unauthenticated error path emits large multi-line sta…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L","cvssSource":"cna","cwe":["CWE-209"],"vendor":"Red Hat","product":"pki-core","affected":["pki-core (all versions)","dogtag-pki (all versions)","pki-core","pki-core (all versions)","pki-core (all versions)","pki-core (all versions)"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-01T17:42:26.127581Z"},"published":"2026-09-01","updated":"2026-11-05","sourceUpdated":"2026-11-05T16:22:50.289Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-11873","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-11873"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487505","label":"RHBZ#2487505"}],"tags":["cve.org"],"epss":0.00456,"epssPercentile":0.3975,"ingestedAt":"2026-11-05T22:38:31.346Z","slug":"CVE-2026-11873","body":"## Overview\n\nAn Apache-proxied Dogtag CA REST endpoint exposed by IdM (POST /ca/rest/certrequests) returns HTTP 500 with internal Java stack traces for unauthenticated malformed requests. The same unauthenticated error path emits large multi-line stack traces into the CA debug log, creating a log-amplification resource exhaustion vector (disk growth and I/O contention) without requiring authentication.\n\n## Affected\n\n- `pki-core (all versions)`\n- `dogtag-pki (all versions)`\n- `pki-core`\n- `pki-core (all versions)`\n- `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\nMake the CA REST API fail safely by checking authentication early and returning simple 4xx errors for malformed requests without stack traces, and tune exception handling and logging so attacker-controlled input cannot spam large stack-trace logs (rate-limit/truncate).","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}