CVE-2026-79747

HIGHPre-NVD 7.17.1—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.2%, top 92% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Elevated
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0

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

MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue server-side requests to it, with no egress filtering (no block of loopback / RFC1918 / link-local 169.254.0.0/16). Via the OpenAPI proxy path the response body is returned to the caller (full, reflected SSRF); via the SSE/streamable-http transport the request is sent blind. This issue has been patched in version 1.0.32.

CVSS v3
7.1
EG Score
7.1(medium)
EG Risk
48(Track)
EG Risk 48/100SSVC: 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
Severity71% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
8%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 8, 2026

Advisory Details (2)

Auto-updated Aug 31, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github_release Patch Available

v1.0.32

Patch available: samanhappy/mcphub v1.0.32

https://github.com/samanhappy/mcphub/releases/tag/v1.0.32
github Patch Available🟡 PoC Available

SSRF: a non-admin user can make mcphub request arbitrary URLs and read the response (OpenAPI proxy + transport dial) · Advisory · samanhappy/mcphub · GitHub

https://github.com/samanhappy/mcphub/security/advisories/GHSA-9wx9-prgc-gmjr

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 39× 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. 2026-09-20 23:46 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-19 22:46 UTCEG score recompute
  4. 2026-09-18 21:46 UTCEG score recompute
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-17 20:47 UTCEG score recompute
  7. 2026-09-16 19:26 UTCEG score recompute
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 06:57 UTCEG score recompute
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 05:36 UTCEG score recompute
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-15 03:12 UTCEPSS rescore
  14. 2026-09-14 03:40 UTCEG score recompute
  15. 2026-09-13 02:42 UTCEG score recompute
  16. 2026-09-12 01:43 UTCEG score recompute
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 14:53 UTCEPSS rescore
  19. 2026-09-11 13:13 UTCEG score recompute
  20. 2026-09-10 12:13 UTCEG score recompute
  21. 2026-09-09 09:41 UTCEG score recompute
  22. 2026-09-08 22:01 UTCEPSS rescore
  23. 2026-09-08 03:39 UTCEG score recompute
  24. 2026-09-06 14:02 UTCEG score recompute
  25. 2026-09-06 13:48 UTCEPSS rescore
Show 14 more
  1. 2026-09-06 01:33 UTCEG score recompute
  2. 2026-09-05 00:33 UTCEG score recompute
  3. 2026-09-04 12:04 UTCEG score recompute
  4. 2026-09-04 05:07 UTCEPSS rescore
  5. 2026-09-02 22:24 UTCEG score recompute
  6. 2026-09-02 14:12 UTCEPSS rescore
  7. 2026-09-01 21:24 UTCEG score recompute
  8. 2026-09-01 13:54 UTCEPSS rescore
  9. 2026-09-01 08:53 UTCEG score recompute
  10. 2026-08-31 20:21 UTCEG score recompute
  11. 2026-08-31 19:40 UTCEG score recompute
  12. 2026-08-31 18:25 UTCEG score recompute
  13. 2026-08-31 18:02 UTCEG score recompute
  14. 2026-08-31 17:59 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-79747?
CVE-2026-79747 is a high vulnerability published on August 31, 2026. MCPHub is a unified hub for centrally managing and dynamically orchestrating multiple MCP servers/APIs into separate endpoints with flexible routing strategies. Prior to version 1.0.32, an authenticated non-admin user can register a server pointing at an arbitrary URL and make the hub issue…
When was CVE-2026-79747 disclosed?
CVE-2026-79747 was first published in the National Vulnerability Database on August 31, 2026, with the most recent update on September 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-79747 actively exploited?
CVE-2026-79747 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 92.4% of all scored CVEs.
What is the CVSS score of CVE-2026-79747?
CVE-2026-79747 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-79747?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79747, 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

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