{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-88763", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-09-10T06:55:26.368Z", "datePublished": "2026-09-10T07:09:10.227Z", "dateUpdated": "2026-09-10T07:09:10.227Z"}, "containers": {"cna": {"title": "Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service", "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"}], "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": "Red Hat Service Interconnect 2", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "skupper-router", "defaultStatus": "affected", "cpes": ["cpe:/a:redhat:service_interconnect:2"]}], "references": [{"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"]}], "datePublic": "2026-09-10T06:56:33.524Z", "problemTypes": [{"descriptions": [{"cweId": "CWE-674", "description": "Uncontrolled Recursion", "lang": "en", "type": "CWE"}]}], "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."}], "providerMetadata": {"orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-09-10T07:09:10.227Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}}}

{}

{"affected": [{"affectedData": [{"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "cpes": ["cpe:/a:redhat:service_interconnect:2"], "defaultStatus": "affected", "packageName": "skupper-router", "product": "Red Hat Service Interconnect 2", "vendor": "Red Hat"}], "source": "secalert@redhat.com"}], "cveTags": [], "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."}], "id": "CVE-2026-88763", "lastModified": "2026-09-10T14:50:07.813", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 2.2, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Primary"}]}, "published": "2026-09-10T08:17:02.223", "references": [{"source": "secalert@redhat.com", "url": "https://access.redhat.com/security/cve/CVE-2026-88763"}, {"source": "secalert@redhat.com", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531301"}], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "secalert@redhat.com", "type": "Primary"}]}

{"acknowledgement": "Red Hat would like to thank Gjoko Krstic (Zero Science Lab) for reporting this issue.", "bugzilla": {"description": "skupper-router: skupper-router: Unbounded recursion in AMQP field parser leads to denial of service", "id": "2531301", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2531301"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-674", "details": ["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."], "name": "CVE-2026-88763", "package_state": [{"cpe": "cpe:/a:redhat:service_interconnect:2", "fix_state": "Affected", "package_name": "skupper-router", "product_name": "Red Hat Service Interconnect 2"}], "public_date": "2026-09-10T06:56:33Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-88763\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-88763"], "statement": "The Red Hat Product Security team has assessed the severity of this vulnerability as Moderate, given that exploitation requires the attacker to have a valid x.509 certificate signed by the internal network's certificate authority. Successful exploitation allows an attacker to crash the skupper-router process, leading to a denial of service. The vulnerability's root cause is a lack of recursion depth limits in the AMQP field parsing logic.", "threat_severity": "Moderate"}