{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-93576","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","state":"PUBLISHED","assignerShortName":"redhat","dateReserved":"2026-09-18T10:33:56.511Z","datePublished":"2026-09-18T14:33:20.473Z","dateUpdated":"2026-09-25T08:29:13.508Z"},"containers":{"cna":{"title":"Io.netty/netty-codec-smtp: netty netty-codec-smtp — smtp command-name field is not crlf-validated (incomplete fix of cve-2025-59419)","metrics":[{"other":{"content":{"value":"Important","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","version":"3.1"},"format":"CVSS"}],"descriptions":[{"lang":"en","value":"A flaw was found in Netty netty-codec-smtp. The component does not properly validate Carriage Return (CR) and Line Feed (LF) characters in the SMTP command-name field. A remote attacker, if an application routes untrusted input into this field, can embed CR/LF characters to inject arbitrary SMTP commands. This can lead to SMTP command smuggling, allowing for unauthorized email relay or spoofing of sender/recipient addresses. While the impact is significant, the real-world exploitability is considered lower as applications typically do not place user-controlled data in the command-name field."}],"affected":[{"vendor":"Red Hat","product":"Red Hat build of Apache Camel for Spring Boot 4","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-smtp","defaultStatus":"affected","cpes":["cpe:/a:redhat:camel_spring_boot:4"]},{"vendor":"Red Hat","product":"Red Hat Fuse 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-smtp","defaultStatus":"unaffected","cpes":["cpe:/a:redhat:jboss_fuse:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"jboss-eap-7/eap74-els-openjdk11-openshift-rhel8","defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"jboss-eap-7/eap74-els-openjdk17-openshift-rhel8","defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"jboss-eap-7/eap74-els-openjdk8-openshift-rhel8","defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat JBoss Enterprise Application Platform 7","collectionURL":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html","packageName":"netty-codec-smtp","defaultStatus":"affected","cpes":["cpe:/a:redhat:jboss_enterprise_application_platform:7"]},{"vendor":"Red Hat","product":"Red Hat Single Sign-On 7","collectionURL":"https://access.redhat.com/downloads/content/package-browser/","packageName":"netty-codec-smtp","defaultStatus":"affected","cpes":["cpe:/a:redhat:red_hat_single_sign_on:7"]}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-93576","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536968","name":"RHBZ#2536968","tags":["issue-tracking","x_refsource_REDHAT"]}],"datePublic":"2026-09-10T00:53:44.000Z","problemTypes":[{"descriptions":[{"cweId":"CWE-93","description":"Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}]}],"x_redhatCweChain":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","workarounds":[{"lang":"en","value":"See https://github.com/netty/netty/security/advisories/GHSA-5vh9-c45f-rf7p for fixed versions and remediation guidance."}],"timeline":[{"lang":"en","time":"2026-09-10T00:53:44.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-10T00:53:44.000Z","value":"Made public."}],"providerMetadata":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2026-09-25T08:29:13.508Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-18T14:58:44.082356Z","id":"CVE-2026-93576","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"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":"2026-09-18T14:58:52.723Z"}}]}}