Reference page — cumulative record through Monday, October 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-88763
Red Hat Service Interconnect 2 for RHEL 8 — Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service
AV AC PR UI S C I A CVSS EPSS %ile KEV
N H N N U N N H 5.9 .0053 43.8 —
AFFECTED
Product Versions Fixed
Service Interconnect 2 for RHEL 8 unspecified 0:3.5.3-1.el8
Service Interconnect 2 for RHEL 9 unspecified 0:3.5.3-1.el9
Service Interconnect 2 for RHEL 9 unspecified 3.5.3-1
TIMELINE
Sep 10 Reserved by redhat
Sep 10 Published (CNA: redhat)
Oct 13 PATCH SHIPPED — CVE-2026-88763 (Red Hat Service Interconnect 2 for RHEL 8). Fixed in Service Interconnect 2 for RHEL 8 0:3.5.3-1.el8.
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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| September 10, 2026 | Reserved | Reserved by redhat |
| September 10, 2026 | Published | Published (CNA: redhat) |
| October 13, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-88763 (Red Hat Service Interconnect 2 for RHEL 8). Fixed in Service Interconnect 2 for RHEL 8 0:3.5.3-1.el8. |
Affected
Affected products and packages — 3 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | Service Interconnect 2 for RHEL 8 | — | — | 0:3.5.3-1.el8 |
| Red Hat | Service Interconnect 2 for RHEL 9 | — | — | 0:3.5.3-1.el9 |
| Red Hat | Service Interconnect 2 for RHEL 9 | — | — | 3.5.3-1 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-88763 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
