CacheTrap

CacheTrap Repository for "CacheTrap: Unveiling a Stealthier Gray-Box Trojan against LLMs" , IEEE/ACM International Conference on Computer-Aided Design ICCAD, 2026. arXiv CacheTrap searches for a single bit flip in the KV cache of a fine-tuned LLM classifier and measures the resulting attack succe...

CVE-2026-111392 SGLang through 0.5.21 KV Cache Poisoning via mm_hashes in /generate

SGLang through 0.5.21 trusts caller-supplied mmhashes values as the multimodal prefix-cache key, allowing remote attackers to poison cached KV entries across requests. Attackers can send a different image under a known or predicted hash via /generate to disclose another request's image content or...

CVE-2026-111392

SGLang versions through 0.5.21 are vulnerable to KV Cache Poisoning due to insufficient verification of mm_hashes values used as multimodal prefix-cache keys. A remote attacker can exploit this by sending a different image with a known or predicted hash via the /generate endpoint. This allows the...

CVE-2026-111392 SGLang through 0.5.21 KV Cache Poisoning via mm_hashes in /generate

SGLang through 0.5.21 trusts caller-supplied mmhashes values as the multimodal prefix-cache key, allowing remote attackers to poison cached KV entries across requests. Attackers can send a different image under a known or predicted hash via /generate to disclose another request's image content or...

WS-2026-0166

vllm 0.9.2 - 0.23.0: P2pNcclConnector parses a host:port from the client-controlled X-Request-Id header and connects to it over ZMQ/NCCL, letting an API caller exfiltrate KV-cache tensors to an attacker host GHSA-vfp2-c8pq-v6h6...

CVE-2026-103765: Missing Authentication for Critical Function

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...

CVE-2026-103765 Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server

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...

CVE-2026-103764 Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport

Mooncake transfer engine before 0.3.13 contains an untrusted pointer dereference in ServerSession::readHeader that allows unauthenticated attackers to read and write arbitrary process memory via the TCP transport data port. Attackers can send a crafted SessionHeader with arbitrary addr and size...

PT-2026-104057

Mooncake transfer engine before 0.3.13 contains an untrusted pointer dereference in ServerSession::readHeader that allows unauthenticated attackers to read and write arbitrary process memory via the TCP transport data port. Attackers can send a crafted SessionHeader with arbitrary addr and size...

SUSE CVE-2026-94627

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

CVE-2026-94627

A flaw was found in vLLM. A remote attacker can exploit a vulnerability in the Mooncake connector's management of GPU Key-Value KV cache block ownership. By submitting completion requests with multiple prompts that share a single transfer ID, attackers can cause orphaned KV cache blocks to...

EUVD-2026-84221

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

Improper Handling of Exceptional Conditions

Overview vllm is an A high-throughput and memory-efficient inference and serving engine for LLMs Affected versions of this package are vulnerable to Improper Handling of Exceptional Conditions in mooncakeconnector.py via the Mooncake KV transfer connector, when a remote KV cache load fails during...

CVE-2026-94627 vLLM through 0.29.0 GPU KV Cache Leak via Mooncake Transfer ID Collision

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

CVE-2026-94627 vLLM through 0.29.0 GPU KV Cache Leak via Mooncake Transfer ID Collision

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

CVE-2026-94627 vLLM through 0.29.0 GPU KV Cache Leak via Mooncake Transfer ID Collision

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

CVE-2026-94627: Missing Release of Memory after Effective Lifetime

vLLM Mooncake connector through 0.29.0 fails to properly manage GPU KV cache block ownership when concurrent child requests share a single transfer ID in prefill/decode disaggregated deployments. Attackers can trigger GPU memory exhaustion by submitting completion requests with multiple prompts,...

PT-2026-96317

Name of the Vulnerable Software and Affected Versions vLLM versions prior to 0.29.1 Description The Mooncake connector fails to properly manage GPU KV cache block ownership during prefill/decode disaggregated deployments when concurrent child requests share a single transfer ID. An attacker can...

CVE-2026-69147 vLLM: Request-selected PyNvVideoCodec GPU decode bypasses static VRAM reservation

vLLM is an inference and serving engine for large language models. Prior to 0.28.0, request bodies for Chat Completions and Responses can set mediaiokwargs.video.videobackend to pynvvideocodec, and MediaConnector.fetchvideo forwards that choice to VideoMediaIO even when startup configuration...

Characterizing Contention-Induced Reliability Collapse in KV-Cache Timing Side Channels for Multi-Tenant LLM Serving

Shared key--value KV cache reuse improves large language model LLM serving, but it can also create a timing side channel that reveals whether a prefix is already cached. Previous work shows that such attacks are possible, but their reliability under realistic multi-tenant contention is less...