Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-18369
Red Hat Red Hat Certificate System 10.4 EUS for RHEL-8 — Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L N N C L N N 5.8 .0022 11.9 —
AFFECTED
Product Versions Fixed
Red Hat Certificate System 10.4 EUS for RHEL-8 unspecified 8060020260814202723.07fb4edf
Red Hat Certificate System 10 unspecified —
Red Hat Certificate System 11 unspecified —
Red Hat Certificate System 9 unspecified —
Red Hat Certificate System 9 unspecified —
Red Hat Enterprise Linux 10 unspecified —
Red Hat Enterprise Linux 6 unspecified —
Red Hat Enterprise Linux 7 unspecified —
Red Hat Enterprise Linux 8 unspecified —
Red Hat Enterprise Linux 9 unspecified —
TIMELINE
Jul 30 Reserved by redhat
Jul 30 Published (CNA: redhat)
Sep 13 PATCH SHIPPED — CVE-2026-18369 (Red Hat Certificate System 10.4 EUS for RHEL-8). Fixed in Red Hat Certificate System 10.4 EUS for RHEL-8 8060020260814202723.07fb4edf.
Description
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| July 30, 2026 | Reserved | Reserved by redhat |
| July 30, 2026 | Published | Published (CNA: redhat) |
| September 13, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-18369 (Red Hat Certificate System 10.4 EUS for RHEL-8). Fixed in Red Hat Certificate System 10.4 EUS for RHEL-8 8060020260814202723.07fb4edf. |
Affected
Affected products and packages — 10 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Red Hat Certificate System 10.4 EUS for RHEL-8 | — | — | 8060020260814202723.07fb4edf |
| Red Hat | Red Hat Certificate System 10 | — | — | — |
| Red Hat | Red Hat Certificate System 11 | — | — | — |
| Red Hat | Red Hat Certificate System 9 | — | — | — |
| Red Hat | Red Hat Certificate System 9 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | — |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-18369 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
