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CVE-2026-11873— Pki-core: dogtag-pki: empty request to dogtag /ca/rest/certrequests causes http 500, java exception, and stacktrace disclosure

Quick assessment

Affected
Red Hat Red Hat Certificate System 9
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.

以下是对该漏洞描述的中文翻译： 通过 Apache 代理暴露的 Dogtag CA REST 端点（ ，由 IdM 提供）在未进行身份验证的情况下，针对格式错误的请求返回 HTTP 500 错误，并泄露内部 Java 堆栈跟踪。该未经身份验证的错误处理路径还会将大量多行堆栈跟踪写入 CA 调试日志，从而形成一种“日志放大”资源耗尽攻击向量（导致磁盘增长和 I/O 竞争），且整个过程无需身份验证。

CVSS 6.5 · Medium
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I. Basic Information for CVE-2026-11873

Vulnerability Information
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Vulnerability Title
Pki-core: dogtag-pki: empty request to dogtag /ca/rest/certrequests causes http 500, java exception, and stacktrace disclosure
Source: CVE Program / CVE List V5
Vulnerability Description
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 stack traces into the CA debug log, creating a log-amplification resource exhaustion vector (disk growth and I/O contention) without requiring authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
通过错误消息导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
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-2026-11873

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III. Intelligence Information for CVE-2026-11873

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Vendor Advisories for CVE-2026-11873 (1)

Other References for CVE-2026-11873 (1)

Same Patch Batch · Red Hat · 2026-09-01 · 10 CVEs total

CVE-2026-84268 8.8 HIGH Gvfs: sftp: heap-based buffer overflow in read_reply()
CVE-2026-84218 8.1 HIGH Org.jolokia/jolokia-core: incomplete jndi denylist in jolokia jsr-160 proxy (bypass of cve
CVE-2026-49329 7.5 HIGH Openshift/oauth-server: openshift/oauth-server: quadratic-time dos via accept-language hea
CVE-2026-84233 7.0 HIGH Rpm: command execution via macro expansion in `rpmuncompress -x` for crafted `.gem` filena
CVE-2026-84269 6.5 MEDIUM Gvfs: afp: heap-based buffer overflow in dsi read path
CVE-2026-84232 5.4 MEDIUM Pulpcore: python-pulpcore: stored cross-site scripting via inline rendering of uploaded ht
CVE-2026-53682 5.3 MEDIUM Pki-core: dogtag-pki: unauthenticated dogtag ca rest api exposes security domain hosts
CVE-2026-84270 4.3 MEDIUM Gvfs: mtp: out-of-bounds read in do_read()
CVE-2026-84267 4.3 MEDIUM Gvfs: sftp: uninitialized heap disclosure in read_string()

IV. Related Vulnerabilities

Same product: Red Hat Certificate System 9
Same vendor: Red Hat
Same weakness: CWE-209

V. Comments for CVE-2026-11873

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