Mooncake transfer engine through 0.3.13.post1 Memory Exhaustion via Unbounded Notify Queue
Priority HIGH 77CWE-770Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-770.
Summary
Mooncake transfer engine through 0.3.13.post1 contains a memory exhaustion vulnerability in TransferMetadata::receivePeerNotify that allows unauthenticated attackers to grow process memory without limit. Attackers can repeatedly send notify frames up to 1 MB to the handshake RPC port, filling the uncapped notifys vector until the out-of-memory killer terminates the engine.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00464 40th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| kvcache-ai | Mooncake | up to 0.3.13.post1 | — | No fix listed | CNA |
- Mooncake Vendorkvcache-ai Affected up to 0.3.13.post1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-103761
- 2026-10-03 Alias added: GHSA-62mv-x7jm-w9f4
- 2026-10-06 CISA SSVC decision points changed
- 2026-10-06 Priority changed: LOW → HIGH
References
More kvcache-ai vulnerabilities
- TI-2026-68428 Missing authentication in Mooncake Store REST service CVSS 4.0CRITICAL 9.3
- TI-2026-65760 Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport CVSS 4.0CRITICAL 9.3
- TI-2026-21201 KTransformers Unsafe Deserialization RCE via balance_serve CVSS 4.0CRITICAL 9.3
- TI-2026-65761 Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server CVSS 4.0HIGH 8.8
- TI-2026-68429 Mooncake Store lets unauthenticated attackers delete any object CVSS 4.0HIGH 8.8
- TI-2026-67384 Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString CVSS 4.0HIGH 8.7
Sources
- CVE-2026-103761 · CVE Program
- CVE-2026-103761 · NVD
- FIRST EPSS
- GHSA-62mv-x7jm-w9f4 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences