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Mooncake Store lets unauthenticated attackers delete any object

Priority HIGH 77CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · Low · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

Mooncake Store from kvcache-ai, master through 0.3.13.post1, lacks authentication on its remove RPCs (CWE-306). A remote attacker with no credentials can send forged requests to the coro_rpc port to force-delete any object, bypass lease checks, wipe keys matching a regex or clear the entire store, causing cache loss and request failures.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Mooncake Store master through 0.3.13.post1 contains a missing authentication vulnerability that allows unauthenticated attackers to force-delete any object via Remove, RemoveByRegex, RemoveAll and BatchRemove on the coro_rpc port. Attackers can send forged requests with the force flag set to bypass lease checks, wipe keys matching any regex, or clear the entire store, causing cache loss and request failures.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00492 42nd 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

VendorProductAffected versionsFixed inStatusSource
kvcache-aiMooncakeup to 0.3.13.post1—No fix listedCNA
  • Mooncake Vendorkvcache-ai Affected up to 0.3.13.post1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Mooncake.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

  1. 2026-10-06 Threatist record created from CVE-2026-106038
  2. 2026-10-06 Alias added: GHSA-j222-33gf-8mpg
  3. 2026-10-07 Priority changed: MEDIUM → LOW
  4. 2026-10-09 CISA SSVC decision points changed
  5. 2026-10-09 Priority changed: LOW → HIGH

References

  • 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-2026-67384 Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString CVSS 4.0HIGH 8.7
  • TI-2026-65759 Mooncake transfer engine through 0.3.13.post1 Memory Exhaustion via Unbounded Notify Queue CVSS 4.0HIGH 8.7
See all 14 →

Sources