CVE-2026-88763
Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service
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.
- Record
CVE-2026-88763- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-02
EUVDEUVD-2026-75288
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.
- Record
EUVD-2026-75288- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-j54j-r8q7-v2hq
A flaw was found in the skupper-router component of Red Hat Service Interconnect, which is used...
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.
- Record
GHSA-j54j-r8q7-v2hq- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2026-88763- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Weakness
- CWE-674
- Updated
- 2026-11-02
OSVRHSA-2026:82316
Red Hat Security Advisory: Red Hat Service Interconnect 2.2.3 Release (rpms)
- Record
RHSA-2026:82316- CVSS 3.1
- 5.9 Medium
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
skupper-routerRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-router-commonRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-router-debuginfoRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-router-debugsourceRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-router-docsRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-router-toolsRed Hat:service_interconnect:2.0::el8 |
before 0:3.5.3-1.el8 | 0:3.5.3-1.el8 |
skupper-routerRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
skupper-router-commonRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
skupper-router-debuginfoRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
skupper-router-debugsourceRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
skupper-router-docsRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
skupper-router-toolsRed Hat:service_interconnect:2.0::el9 |
before 0:3.5.3-1.el9 | 0:3.5.3-1.el9 |
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2026-88763 is a medium vulnerability (CVSS 5.9) in Red Hat Service Interconnect 2 For Rhel 8, published September 10, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.53%, the 45th percentile. Fixed in skupper-router 0:3.5.3-1.el8.