CVE-2026-88763

MEDIUMPre-NVD 5.95.9—
EchelonGraph scoreHIGH confidence

Score 5.9 from GitHub Security Advisory published 2026-09-10. a secondary CVSS source baseline 5.9; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
5.9EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.9Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 v3
5.9
EG Score
5.9(high)
EG Risk
27(Track)
EG Risk 27/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity59% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
17%
KEV
Not listed

Published

September 10, 2026

Last Modified

September 14, 2026

Advisory Details (2)

Auto-updated Sep 10, 2026
Patch available. Sources: redhat.
redhat

2531301 – (CVE-2026-88763) CVE-2026-88763 skupper-router: skupper-router: Unbounded recursion in AMQP field parser leads to denial of service

https://bugzilla.redhat.com/show_bug.cgi?id=2531301
redhat Patch Available

CVE-2026-88763 - Red Hat Customer Portal

Affected: Red Hat Enterprise Linux 8 or OpenShift Container Platform 4, is affected by this vulnerability and a fix may be released to a

https://access.redhat.com/security/cve/CVE-2026-88763

Vendor Advisories for CVE-2026-88763(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 24× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 05:56 UTCEG score recompute
  2. 2026-09-19 05:55 UTCGHSA enrichment
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 08:15 UTCEG score recompute
  5. 2026-09-18 08:15 UTCGHSA enrichment
  6. 2026-09-17 19:32 UTCEPSS rescore
  7. 2026-09-17 10:34 UTCEG score recompute
  8. 2026-09-17 10:34 UTCGHSA enrichment
  9. 2026-09-16 14:09 UTCEPSS rescore
  10. 2026-09-16 12:50 UTCEG score recompute
  11. 2026-09-16 12:50 UTCGHSA enrichment
  12. 2026-09-16 05:15 UTCEPSS rescore
  13. 2026-09-15 15:09 UTCEG score recompute
  14. 2026-09-15 15:09 UTCGHSA enrichment
  15. 2026-09-15 03:12 UTCEPSS rescore
  16. 2026-09-14 17:28 UTCEG score recompute
  17. 2026-09-14 17:28 UTCGHSA enrichment
  18. 2026-09-14 16:45 UTCEG score recompute
  19. 2026-09-14 16:45 UTCGHSA enrichment
  20. 2026-09-14 05:44 UTCEG score recompute
  21. 2026-09-14 05:44 UTCGHSA enrichment
  22. 2026-09-13 16:48 UTCEPSS rescore
  23. 2026-09-13 08:03 UTCEG score recompute
  24. 2026-09-13 08:03 UTCGHSA enrichment
  25. 2026-09-12 15:02 UTCEPSS rescore
Show 11 more
  1. 2026-09-12 10:22 UTCEG score recompute
  2. 2026-09-12 10:22 UTCGHSA enrichment
  3. 2026-09-11 14:53 UTCEPSS rescore
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 12:41 UTCEG score recompute
  6. 2026-09-11 12:41 UTCGHSA enrichment
  7. 2026-09-10 14:57 UTCEG score recompute
  8. 2026-09-10 14:57 UTCGHSA enrichment
  9. 2026-09-10 08:36 UTCEG score recompute
  10. 2026-09-10 07:25 UTCEG score recompute
  11. 2026-09-10 07:24 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-88763?
CVE-2026-88763 is a medium vulnerability published on September 10, 2026. 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…
When was CVE-2026-88763 disclosed?
CVE-2026-88763 was first published in the National Vulnerability Database on September 10, 2026, with the most recent update on September 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-88763 actively exploited?
CVE-2026-88763 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 83.3% of all scored CVEs.
What is the CVSS score of CVE-2026-88763?
CVE-2026-88763 has a CVSS v3 base score of 5.9 (NVD).
How do I remediate CVE-2026-88763?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-88763, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-88763

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