Dogtag-pki: pki-core: redhat-pki: pki: acme http-01 validation ssrf via ip literal identifiers and unvalidated redirects
Priority LOW 32CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Partial Red Hat: 1 fixed, 8 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-918 and the CVSS impact.
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 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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00384 32nd percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 1 fixed, 8 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Red Hat | Red Hat Certificate System 10.4 EUS for RHEL-8 | — | 8060020260814202723.07fb4edf | Patch available | CNA |
| Red Hat | Red Hat Certificate System 10 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Certificate System 11 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Certificate System 9 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Certificate System 9 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 6 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 7 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | — | No fix listed | CNA |
- Red Hat Certificate System 10.4 EUS for RHEL-8 VendorRed Hat Affected — Fixed in 8060020260814202723.07fb4edf Patch available CNA
- Red Hat Certificate System 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Certificate System 11 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Certificate System 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Certificate System 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 6 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 7 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 9
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:certificate_system_eus:10.4::el8 | 10.4 | — | Red Hat |
| cpe:/a:redhat:certificate_system:10 | 10 | — | Red Hat |
| cpe:/a:redhat:certificate_system:11 | 11 | — | Red Hat |
| cpe:/a:redhat:certificate_system:9 | 9 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:10 | 10 | — | Red Hat |
| cpe:/o:redhat:rhel_els:6 | 6 | — | Red Hat |
| cpe:/o:redhat:rhel_els:7 | 7 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8 | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9 | 9 | — | Red Hat |
- cpe:/a:redhat:certificate_system_eus:10.4::el8 Versions 10.4 — ·Red Hat
- cpe:/a:redhat:certificate_system:10 Versions 10 — ·Red Hat
- cpe:/a:redhat:certificate_system:11 Versions 11 — ·Red Hat
- cpe:/a:redhat:certificate_system:9 Versions 9 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
- cpe:/o:redhat:rhel_els:6 Versions 6 — ·Red Hat
- cpe:/o:redhat:rhel_els:7 Versions 7 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8 Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9 Versions 9 — ·Red Hat
Remediation
Red Hat 1 advisory
- RHSA-2026:67110 Released 2026-09-14 · Red Hat rating ModerateRed Hat Certificate System 10.4.4 security and bug fix update for RHEL 8
- Red Hat Certificate System 10.4 EUS for RHEL 8 idm-console-framework-1.3.0-1.module+el8pki+14677+1ef79a68.noarch::redhat-pki:10, idm-console-framework-1.3.0-1.module+el8pki+14677+1ef79a68.src::redhat-pki:10, jss-4.9.11-1.module+el8pki+24697+be195eea.src::redhat-pki:10 +26
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Certificate System 10 | Affected | No fix yet: Fix deferred |
| Red Hat Certificate System 11 | Affected | No fix yet: Fix deferred |
| Red Hat Certificate System 9 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 10 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 6 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 7 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 8 | Affected | No fix yet: Fix deferred |
| Red Hat Enterprise Linux 9 | Affected | No fix yet: Fix deferred |
| Red Hat Certificate System 10.4 EUS for RHEL 8 | Fixed | RHSA-2026:67110 |
Timeline
- 2026-10-02 Threatist record created from CVE-2026-18369
- 2026-10-03 Alias added: GHSA-g3fm-cr7x-pwvj
References
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Sources
- CVE-2026-18369 · CVE Program
- CVE-2026-18369 · NVD
- FIRST EPSS
- GHSA-g3fm-cr7x-pwvj · GitHub Advisory Database · CC BY 4.0
- CVE-2026-18369 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences