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CVE-2026-85471— Quay: quay: webhook notification ssrf -- hostname-string blocklist trivially bypassable

Quick assessment

Affected
Red Hat mirror registry for Red Hat OpenShift
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.

在 Quay 中发现了一个漏洞。经过身份验证的仓库管理员可以绕过 webhook 通知中的主机名黑名单，导致服务器端请求伪造（SSRF）漏洞。这可能导致 Quay 应用被诱导向内部网络资源发送请求，例如云元数据服务或集群内的其他服务。因此，可能会导致这些内部服务中的敏感信息泄露。

CVSS 6.4 · Medium EPSS 0.21% · P10

Affected Version Matrix 4

VendorProduct Version RangeStatus
Red Hat mirror registry for Red Hat OpenShift any affected
Red Hat mirror registry for Red Hat OpenShift 2 any affected
Red Hat Red Hat Quay 3 any affected
any affected
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I. Basic Information for CVE-2026-85471

Vulnerability Information
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Vulnerability Title
Quay: quay: webhook notification ssrf -- hostname-string blocklist trivially bypassable
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in Quay. An authenticated repository administrator could bypass the hostname blacklist in webhook notifications, leading to a Server-Side Request Forgery (SSRF) vulnerability. This allows the Quay application to be tricked into sending requests to internal network resources, such as cloud metadata services or other services within the cluster. Consequently, this could lead to the disclosure of sensitive information from these internal services.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat mirror registry for Red Hat OpenShift - cpe:/a:redhat:mirror_registry:1
Red Hat mirror registry for Red Hat OpenShift 2 - cpe:/a:redhat:mirror_registry:2
Red Hat Red Hat Quay 3 - cpe:/a:redhat:quay:3
Red Hat Red Hat Quay 3 - cpe:/a:redhat:quay:3

II. Public POCs for CVE-2026-85471

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III. Intelligence Information for CVE-2026-85471

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Vendor Advisories for CVE-2026-85471 (2)

Same Patch Batch · Red Hat · 2026-10-12 · 12 CVEs total

CVE-2026-87744 9.1 CRITICAL Io.quarkus:quarkus-hibernate-orm-rest-data-panache: missing authorization in quarkus rest
CVE-2026-108094 7.8 HIGH Mutter: mutter: client-triggered use-after-free in wayland color-management icc image desc
CVE-2026-75888 7.7 HIGH Openshift/console: openshift/console: authenticated ssrf via helm chart url fetch
CVE-2026-83535 7.4 HIGH Openstack-network-exporter: basic-auth uses plaintext password storage and non-constant-ti
CVE-2026-109082 6.8 MEDIUM Keycloak-services: keycloak-services: ciba confidential-only contract not enforced for pub
CVE-2026-94451 6.5 MEDIUM Quarkus-hibernate-orm-rest-data-panache: quarkus-hibernate-orm-rest-data-panache: informat
CVE-2026-107193 6.5 MEDIUM Foreman: api filter lookup ignores a search-limited filter permission
CVE-2026-109194 6.4 MEDIUM Quay: build trigger uuid idor in quay api
CVE-2026-107203 5.4 MEDIUM Foreman: domain and subnet interface api skips host search filters
CVE-2026-83536 5.3 MEDIUM Openstack-network-exporter: http.server has no readheadertimeout / readtimeout (slowloris)
CVE-2026-109195 3.1 LOW Quay: repository auto-prune policy uuid idor in quay api

IV. Related Vulnerabilities

Same product: mirror registry for Red Hat OpenShift
Same vendor: Red Hat
Same weakness: CWE-918

V. Comments for CVE-2026-85471

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