{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-16910","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-07-24T06:26:22.299Z","datePublished":"2026-07-24T06:36:18.918Z","dateUpdated":"2026-07-24T10:55:46.478Z"},"containers":{"cna":{"title":"Quay: ssrf in red hat quay notification webhooks (slack/generic)","metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"LOW","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in Red Hat Quay's notification webhook feature. The Slack and generic webhook notification handlers accept user-supplied URLs without SSRF validation, allowing a repository administrator to make the Quay worker issue POST requests to internal network addresses or cloud infrastructure endpoints that should not be reachable from the application."}],"affected":[{"vendor":"Red Hat","product":"Red Hat OpenShift Update Service","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"openshift-update-service/openshift-update-service-rhel8","defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift_update_service:5"]},{"vendor":"Red Hat","product":"Red Hat Quay 3","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"quay/quay-rhel8","defaultStatus":"unknown","cpes":["cpe:/a:redhat:quay:3"]},{"vendor":"Red Hat","product":"Red Hat Quay 3","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"quay/quay-rhel9","defaultStatus":"affected","cpes":["cpe:/a:redhat:quay:3"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-16910","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2506685","name":"RHBZ#2506685","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-07-07T00:00:00.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-918","description":"Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-918: Server-Side Request Forgery (SSRF)","workarounds":[{"lang":"en","value":"Restrict network egress from Quay worker pods/containers using network policies or firewall rules to block outbound connections to internal network ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16) and cloud metadata endpoints (169.254.169.254). Limit repository creation and admin privileges to trusted users. Configure WEBHOOK_HOSTNAME_BLACKLIST in Quay config to include known internal hostnames and IP ranges."}],"timeline":[{"lang":"en","time":"2026-07-24T06:09:13.826Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-07-07T00:00:00.000Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Martin Brodeur for reporting this issue."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-07-24T06:36:18.918Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-24T10:55:31.656441Z","id":"CVE-2026-16910","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-24T10:55:46.478Z"}}]}}