CVE-2026-7141 (GCVE-0-2026-7141)
Vulnerability from cvelistv5
Published
2026-04-27 16:45
Modified
2026-08-25 19:07
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-908 - Uninitialized Resource
Summary
A vulnerability was found in vLLM up to 0.19.0. The affected element is the function has_mamba_layers of the file vllm/v1/kv_cache_interface.py of the component KV Block Handler. Performing a manipulation results in uninitialized resource. It is possible to initiate the attack remotely. The attack is considered to have high complexity. The exploitability is described as difficult. The exploit has been made public and could be used. The existence of this vulnerability is still disputed at present. The proposed patch did not fix the issue. A 3rd party explains: "The divergence could be explained by a benign and expected vLLM behavior where vLLM server could group concurrent requests together resulting in different input shapes based on varying request arrival time. The differences in grouped input shapes could call different kernels with could produce difference results due to rounding and differences in order of operations. There is an environment variable VLLM_BATCH_INVARIANT=1 for users that desire to have deterministic output with temperature 0.0."
References
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| n/a | vLLM |
Version: 0.1 Version: 0.2 Version: 0.3 Version: 0.4 Version: 0.5 Version: 0.6 Version: 0.7 Version: 0.8 Version: 0.9 Version: 0.10 Version: 0.11 Version: 0.12 Version: 0.13 Version: 0.14 Version: 0.15 Version: 0.16 Version: 0.17 Version: 0.18 Version: 0.19.0 cpe:2.3:a:vllm:vllm:*:*:*:*:*:*:*:* |
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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