CVE-2026-79744

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 8.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6%, top 56% 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
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.8Exploit: 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 1.0.29, MCPHub's PUT /api/system-config endpoint (handler updateSystemConfig) performs no authorization check. It is protected only by the app-wide authentication middleware and a rate limiter — it never inspects req.user.isAdmin. This issue has been patched in version 1.0.29.

CVSS v3
8.8
EG Score
8.8(medium)
EG Risk
56(Track*)
EG Risk 56/100SSVC: 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
1%
EPSS %ILE
44%
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

v1.0.29

Patch available: samanhappy/mcphub v1.0.29

https://github.com/samanhappy/mcphub/releases/tag/v1.0.29
github Patch Available🟡 PoC Available

Missing Authorization on `PUT /api/system-config` Lets Any Non-Admin Rewrite Global Security Configuration · Advisory · samanhappy/mcphub · GitHub

https://github.com/samanhappy/mcphub/security/advisories/GHSA-4gc8-885f-qj36

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 45× 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. 2026-09-24 20:18 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-23 19:50 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-22 18:11 UTCEG score recompute
  6. 2026-09-22 16:01 UTCEPSS rescore
  7. 2026-09-22 05:58 UTCEG score recompute
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-21 05:30 UTCEG score recompute
  10. 2026-09-20 20:16 UTCEPSS rescore
  11. 2026-09-19 16:45 UTCEG score recompute
  12. 2026-09-19 04:32 UTCEG score recompute
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-18 03:50 UTCEG score recompute
  15. 2026-09-16 15:11 UTCEG score recompute
  16. 2026-09-16 14:08 UTCEPSS rescore
  17. 2026-09-16 05:15 UTCEPSS rescore
  18. 2026-09-15 14:44 UTCEG score recompute
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 02:00 UTCEG score recompute
  22. 2026-09-13 01:34 UTCEG score recompute
  23. 2026-09-12 01:08 UTCEG score recompute
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 20 more
  1. 2026-09-11 12:54 UTCEG score recompute
  2. 2026-09-10 11:56 UTCEG score recompute
  3. 2026-09-09 09:25 UTCEG score recompute
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-06 22:10 UTCEG score recompute
  6. 2026-09-06 13:48 UTCEPSS rescore
  7. 2026-09-05 21:44 UTCEG score recompute
  8. 2026-09-04 21:17 UTCEG score recompute
  9. 2026-09-04 09:04 UTCEG score recompute
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-02 20:22 UTCEG score recompute
  12. 2026-09-02 14:12 UTCEPSS rescore
  13. 2026-09-01 19:54 UTCEG score recompute
  14. 2026-09-01 13:54 UTCEPSS rescore
  15. 2026-09-01 07:41 UTCEG score recompute
  16. 2026-08-31 19:28 UTCEG score recompute
  17. 2026-08-31 18:55 UTCEG score recompute
  18. 2026-08-31 18:25 UTCEG score recompute
  19. 2026-08-31 18:02 UTCEG score recompute
  20. 2026-08-31 17:59 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-79744?
CVE-2026-79744 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 1.0.29, MCPHub's PUT /api/system-config endpoint (handler updateSystemConfig) performs no authorization check. It is…
When was CVE-2026-79744 disclosed?
CVE-2026-79744 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-2026-79744 actively exploited?
CVE-2026-79744 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 56.1% of all scored CVEs.
What is the CVSS score of CVE-2026-79744?
CVE-2026-79744 has a CVSS v3 base score of 8.8 (NVD).
How do I remediate CVE-2026-79744?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79744, 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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