{"id":"CVE-2026-88763","state":"PUBLISHED","title":"Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service","description":"A flaw was found in the skupper-router component of Red Hat Service Interconnect, which is used to provide secure communication between distributed services. The issue occurs when the router processes a specially crafted network message using its AMQP field parser. Due to a lack of bounds on recursion during parsing, the router can run out of stack memory and crash, leading to a denial of service for the interconnected network.","publishedAt":"2026-09-10T07:09:10.227Z","updatedAt":"2026-10-13T21:40:40.196Z","severity":{"score":5.9,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","source":"redhat"},"assigner":"redhat","products":["Red Hat Service Interconnect 2 for RHEL 8","Red Hat Service Interconnect 2 for RHEL 9"],"affected":[{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 8","packageName":"skupper-router","defaultStatus":"affected","versions":[{"version":"0:3.5.3-1.el8","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el8","cpe:/a:redhat:service_interconnect:2.0::el9"]},{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 9","packageName":"skupper-router","defaultStatus":"affected","versions":[{"version":"0:3.5.3-1.el9","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el8","cpe:/a:redhat:service_interconnect:2.0::el9"]},{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 9","packageName":"service-interconnect/skupper-router-rhel9","defaultStatus":"affected","versions":[{"version":"3.5.3-1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el9"]}],"references":["https://access.redhat.com/errata/RHSA-2026:82316","https://access.redhat.com/errata/RHSA-2026:82340","https://access.redhat.com/security/cve/CVE-2026-88763","https://bugzilla.redhat.com/show_bug.cgi?id=2531301"],"weaknesses":["CWE-674"],"ingestedAt":"2026-10-29T20:13:26.108Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/88xxx/CVE-2026-88763.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-88763","state":"PUBLISHED","datePublished":"2026-09-10T07:09:10.227Z","dateUpdated":"2026-10-13T21:40:40.196Z","assignerShortName":"redhat","assignerOrgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateReserved":"2026-09-10T06:55:26.368Z"},"containers":{"cna":{"title":"Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service","descriptions":[{"lang":"en","value":"A flaw was found in the skupper-router component of Red Hat Service Interconnect, which is used to provide secure communication between distributed services. The issue occurs when the router processes a specially crafted network message using its AMQP field parser. Due to a lack of bounds on recursion during parsing, the router can run out of stack memory and crash, leading to a denial of service for the interconnected network."}],"affected":[{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 8","packageName":"skupper-router","defaultStatus":"affected","versions":[{"version":"0:3.5.3-1.el8","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el8","cpe:/a:redhat:service_interconnect:2.0::el9"]},{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 9","packageName":"skupper-router","defaultStatus":"affected","versions":[{"version":"0:3.5.3-1.el9","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el8","cpe:/a:redhat:service_interconnect:2.0::el9"]},{"vendor":"Red Hat","product":"Service Interconnect 2 for RHEL 9","packageName":"service-interconnect/skupper-router-rhel9","defaultStatus":"affected","versions":[{"version":"3.5.3-1","status":"unaffected","lessThan":"*","versionType":"rpm"}],"collectionURL":"https://catalog.redhat.com/software/containers/","cpes":["cpe:/a:redhat:service_interconnect:2.0::el9"]}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:82316","name":"RHSA-2026:82316","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/errata/RHSA-2026:82340","name":"RHSA-2026:82340","tags":["vendor-advisory","x_refsource_REDHAT"]},{"url":"https://access.redhat.com/security/cve/CVE-2026-88763","tags":["vdb-entry","x_refsource_REDHAT"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2531301","name":"RHBZ#2531301","tags":["issue-tracking","x_refsource_REDHAT"]}],"metrics":[{"other":{"content":{"value":"Moderate","namespace":"https://access.redhat.com/security/updates/classification/"},"type":"Red Hat severity rating"}},{"cvssV3_1":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":5.9,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-674","description":"Uncontrolled Recursion","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"redhat","orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","dateUpdated":"2026-10-13T21:40:40.196Z"},"datePublic":"2026-09-10T06:56:33.524Z","x_redhatCweChain":"CWE-674: Uncontrolled Recursion","timeline":[{"lang":"en","time":"2026-08-24T18:59:56.000Z","value":"Reported to Red Hat."},{"lang":"en","time":"2026-09-10T06:56:33.524Z","value":"Made public."}],"credits":[{"lang":"en","value":"Red Hat would like to thank Gjoko Krstic (Zero Science Lab) for reporting this issue."}],"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-14T16:36:19.640574Z","id":"CVE-2026-88763","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-14T16:36:29.587Z"}}]}}}