Medium severity · published Sep 10, 2026
CVE-2026-88763
Skupper-router: skupper-router: unbounded recursion in amqp field parser leads to denial of service
5.9
CVSS
0.5%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 45% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
SI
Service Interconnect 2 for RHEL 8 · Red Hat
All versions, or not specified · source: vendor
SI
Service Interconnect 2 for RHEL 9 · Red Hat
All versions, or not specified · source: vendor
Affected product
SI
Service Interconnect 2 for RHEL 8
Red Hat
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88763
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88763
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:82316
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:82340
vdb-entry
https://access.redhat.com/security/cve/CVE-2026-88763
issue-tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2531301
