CVE-2026-103765

CRITICALPre-NVD 9.49.4—
EchelonGraph scoreHIGH confidence

Score 9.4 from GitHub Security Advisory (severity: HIGH) published 2026-10-02. A secondary CVSS source baseline 9.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 4 sources updated this weekElevated
9.4EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.5%CVSS: 9.4Exploit: Elevated riskExposed services: Not assessed

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

Mooncake through 0.3.13.post1 contains a missing authentication vulnerability in the HTTP metadata server /metadata handler that allows unauthenticated attackers to read, overwrite, and delete transfer engine metadata keys. Attackers can poison segment descriptors such as tcp_data_port or re-create rpc_meta entries to redirect KV cache transfers to attacker-controlled listeners, or exhaust server memory.

CVSS v3
9.4
EG Score
9.4CRITICALhigh confidence
EG Risk
73
EG Risk 73/100CISA SSVC

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
Severity94% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.5%
EPSS %ILE
40th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

October 1, 2026

Last Modified

October 2, 2026

Advisory Details (4)

Auto-updated Oct 2, 2026
No patch confirmed yet.
generic

[Bug]: Unauthenticated Mooncake HTTP metadata server allows segment descriptor poisoning and KV transfer redirection · Issue #4444 · kvcache-ai/Mooncake · GitHub

https://github.com/kvcache-ai/Mooncake/issues/4444
generic

Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server | Advisories | VulnCheck

https://www.vulncheck.com/advisories/mooncake-through-0.3.13-post1-missing-authentication-in-http-metadata-server
generic

Mooncake/mooncake-wheel/mooncake/http_metadata_server.py at 719735896c86b56fabec6cf3e825fb2ea640597a · kvcache-ai/Mooncake · GitHub

https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-wheel/mooncake/http_metadata_server.py#L61-L106
generic

GitHub - kvcache-ai/Mooncake: Mooncake is the serving platform for Kimi, a leading LLM service provided by Moonshot AI. · GitHub

https://github.com/kvcache-ai/Mooncake

Vendor Advisories for CVE-2026-103765(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 27× in last 7d / 27× 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. 2026-10-04 07:26 UTCGHSA enrichment
  2. 2026-10-04 03:32 UTCGHSA enrichment
  3. 2026-10-03 23:38 UTCGHSA enrichment
  4. 2026-10-03 19:44 UTCGHSA enrichment
  5. 2026-10-03 15:51 UTCEG score recompute
  6. 2026-10-03 15:51 UTCGHSA enrichment
  7. 2026-10-03 14:25 UTCEPSS rescore
  8. 2026-10-03 11:57 UTCGHSA enrichment
  9. 2026-10-03 08:03 UTCGHSA enrichment
  10. 2026-10-03 04:08 UTCGHSA enrichment
  11. 2026-10-03 00:14 UTCGHSA enrichment
  12. 2026-10-02 20:21 UTCEG score recompute
  13. 2026-10-02 20:20 UTCGHSA enrichment
  14. 2026-10-02 19:56 UTCEG score recompute
  15. 2026-10-02 19:56 UTCGHSA enrichment
  16. 2026-10-02 18:16 UTCGHSA enrichment
  17. 2026-10-02 18:15 UTCGHSA enrichment
  18. 2026-10-02 18:15 UTCEG score recompute
  19. 2026-10-02 18:15 UTCGHSA enrichment
  20. 2026-10-02 16:03 UTCGHSA enrichment
  21. 2026-10-02 12:09 UTCGHSA enrichment
  22. 2026-10-02 08:15 UTCGHSA enrichment
  23. 2026-10-02 04:21 UTCEG score recompute
  24. 2026-10-02 04:21 UTCGHSA enrichment
  25. 2026-10-02 00:25 UTCEG score recompute
Show 2 more
  1. 2026-10-01 23:24 UTCEG score recompute
  2. 2026-10-01 23:20 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-103765?
CVE-2026-103765 is a critical vulnerability published on October 1, 2026. Mooncake through 0.3.13.post1 contains a missing authentication vulnerability in the HTTP metadata server /metadata handler that allows unauthenticated attackers to read, overwrite, and delete transfer engine metadata keys. Attackers can poison segment descriptors such as tcpdataport or re-create…
When was CVE-2026-103765 disclosed?
CVE-2026-103765 was first published on October 1, 2026, with the most recent update on October 2, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-103765 actively exploited?
CVE-2026-103765 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.5% probability of exploitation in the next 30 days (40th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-103765?
CVE-2026-103765 has a CVSS base score of 9.4 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-103765?
No fix for CVE-2026-103765 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-103765 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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