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CVE-2026-18047— Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash

Quick assessment

Affected
Red Hat Red Hat Certificate System 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

dogtagpki是Dogtagpki团队开源的一套证书管理软件系统。 Dogtag PKI存在授权问题漏洞，该漏洞源于web.xml安全约束使用精确URL模式匹配，通过添加尾随斜杠绕过Tomcat身份验证约束，可能导致未经身份验证的攻击者切换ACME服务状态，包括持久拒绝服务。

CVSS 6.5 · Medium EPSS 0.49% · P40

Affected Version Matrix 9

VendorProduct Version RangeStatus
Red Hat Red Hat Certificate System 10 any affected
Red Hat Red Hat Certificate System 11 any affected
Red Hat Red Hat Certificate System 9 any unknown
any unknown
Red Hat Red Hat Enterprise Linux 10 any affected
Red Hat Red Hat Enterprise Linux 6 any unknown
Red Hat Red Hat Enterprise Linux 7 any affected
Red Hat Red Hat Enterprise Linux 8 any affected
Red Hat Red Hat Enterprise Linux 9 any affected
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I. Basic Information for CVE-2026-18047

Vulnerability Information
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Vulnerability Title
Dogtag-pki: pki-core: redhat-pki: pki: acme admin enable/disable endpoint authentication bypass via trailing slash
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
使用候选路径或通道进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Dogtag PKI 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
dogtagpki是Dogtagpki团队开源的一套证书管理软件系统。 Dogtag PKI存在授权问题漏洞，该漏洞源于web.xml安全约束使用精确URL模式匹配，通过添加尾随斜杠绕过Tomcat身份验证约束，可能导致未经身份验证的攻击者切换ACME服务状态，包括持久拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Certificate System 10 - cpe:/a:redhat:certificate_system:10
Red Hat Red Hat Certificate System 11 - cpe:/a:redhat:certificate_system:11
Red Hat Red Hat Certificate System 9 - cpe:/a:redhat:certificate_system:9
Red Hat Red Hat Certificate System 9 - cpe:/a:redhat:certificate_system:9
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 6 - cpe:/o:redhat:enterprise_linux:6
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-18047

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III. Intelligence Information for CVE-2026-18047

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Vendor Advisories for CVE-2026-18047 (2)

Same Patch Batch · Red Hat · 2026-07-28 · 5 CVEs total

CVE-2026-49332 8.5 HIGH Openshift/oauth-proxy: openshift/oauth-proxy: underscore header smuggling enables identity
CVE-2026-18107 7.8 HIGH Criu: criu: container escape via rseq critical section hijack during checkpoint/restore
CVE-2026-16313 7.6 HIGH Sg3_utils: sg3_utils: arbitrary command execution via udev property injection in sg_inq --
CVE-2026-17072 3.3 LOW Gstreamer1-plugins-good: gst-plugins-good: 4-byte heap over-read in gst_matroska_parse_fla

IV. Related Vulnerabilities

Same product: Red Hat Certificate System 10
Same vendor: Red Hat
Same weakness: CWE-288

V. Comments for CVE-2026-18047

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