CVE-2026-79745

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: 0.4%, top 65% 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, the built-in prompt and resource controllers perform no role checking. The mutating POST/PUT /api/prompts* and POST/PUT /api/resources* routes are attached to the authenticated router with no admin gate, and the handlers never read req.user. The DAO singletons they write are consulted first — ahead of any connected MCP server — for every session in handleGetPromptRequest / handleReadResourceRequest. A non-admin can therefore create, overwrite, and shadow global prompt templates and resources that all other users are served. The scored impact is the unauthorized integrity violation (creation/tampering/shadowing of globally-served records); stored prompt injection into other users' LLM sessions is a downstream consequence of that tampering. 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
35%
KEV
Not listed

Published

August 31, 2026

Last Modified

September 8, 2026

Advisory Details (4)

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

commit 6ba55ac63954 (samanhappy/mcphub)

Patch available: samanhappy/mcphub v1.0.32 (contains commit 6ba55ac63954)

https://github.com/samanhappy/mcphub/commit/6ba55ac63954a71506e61c088753251e2ff643cf
github_pr Patch Available

fix(security): close open security advisory findings (SSRF, authz, OAuth PKCE)

Patch available: samanhappy/mcphub v1.0.32 (PR #1069 merged 2026-08-23)

https://github.com/samanhappy/mcphub/pull/1069
github Patch Available🟡 PoC Available

Missing Authorization on Built-in Prompt & Resource CRUD (Unauthorized Tampering of Globally-Served Templates/Resources) · Advisory · samanhappy/mcphub · GitHub

https://github.com/samanhappy/mcphub/security/advisories/GHSA-6cvf-cfch-4g7m

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 13× in last 7d / 44× 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. 2026-09-25 01:50 UTCEG score recompute
  2. 2026-09-24 14:04 UTCEPSS rescore
  3. 2026-09-24 01:12 UTCEG score recompute
  4. 2026-09-23 17:54 UTCEPSS rescore
  5. 2026-09-23 00:36 UTCEG score recompute
  6. 2026-09-22 16:01 UTCEPSS rescore
  7. 2026-09-21 23:59 UTCEG score recompute
  8. 2026-09-21 21:09 UTCEPSS rescore
  9. 2026-09-20 23:21 UTCEG score recompute
  10. 2026-09-20 20:16 UTCEPSS rescore
  11. 2026-09-19 22:23 UTCEG score recompute
  12. 2026-09-18 21:26 UTCEG score recompute
  13. 2026-09-18 19:28 UTCEPSS rescore
  14. 2026-09-17 20:47 UTCEG score recompute
  15. 2026-09-16 16:04 UTCEG score recompute
  16. 2026-09-16 14:08 UTCEPSS rescore
  17. 2026-09-16 05:15 UTCEPSS rescore
  18. 2026-09-15 15:26 UTCEG score recompute
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-14 02:28 UTCEG score recompute
  22. 2026-09-13 01:51 UTCEG score recompute
  23. 2026-09-12 01:13 UTCEG score recompute
  24. 2026-09-11 14:53 UTCEPSS rescore
  25. 2026-09-11 14:53 UTCEPSS rescore
Show 19 more
  1. 2026-09-11 12:54 UTCEG score recompute
  2. 2026-09-10 12:04 UTCEG score recompute
  3. 2026-09-09 09:30 UTCEG score recompute
  4. 2026-09-08 22:01 UTCEPSS rescore
  5. 2026-09-07 18:58 UTCEG score recompute
  6. 2026-09-06 18:20 UTCEG score recompute
  7. 2026-09-06 13:48 UTCEPSS rescore
  8. 2026-09-05 17:42 UTCEG score recompute
  9. 2026-09-04 17:00 UTCEG score recompute
  10. 2026-09-04 05:07 UTCEPSS rescore
  11. 2026-09-03 03:54 UTCEG score recompute
  12. 2026-09-02 15:34 UTCEG score recompute
  13. 2026-09-02 14:31 UTCEG score recompute
  14. 2026-09-02 14:12 UTCEPSS rescore
  15. 2026-09-01 19:09 UTCEG score recompute
  16. 2026-09-01 13:54 UTCEPSS rescore
  17. 2026-08-31 18:25 UTCEG score recompute
  18. 2026-08-31 18:02 UTCEG score recompute
  19. 2026-08-31 17:59 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-79745?
CVE-2026-79745 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, the built-in prompt and resource controllers perform no role checking. The mutating POST/PUT /api/prompts and…
When was CVE-2026-79745 disclosed?
CVE-2026-79745 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-2026-79745 actively exploited?
CVE-2026-79745 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 64.5% of all scored CVEs.
What is the CVSS score of CVE-2026-79745?
CVE-2026-79745 has a CVSS v3 base score of 7.1 (NVD).
How do I remediate CVE-2026-79745?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-79745, 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.

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