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CVE-2026-126394

vLLM 0.30.0 before 0.31.0 Resource Exhaustion via OpenPangu Video Backend num_frames

Severity
Medium 6.9
Published
13 Nov 2026
Last changed
13 Nov 2026
Added to UpHeron
13 Nov 2026
Fixed in
0.31.0
Weakness
Allocation without limits (CWE-770)
Attack
Over the network · No login needed · No user action needed
Attacker can
Slow it down
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Sources
CVE Program

Description

vLLM 0.30.0 before 0.31.0 contains a resource exhaustion vulnerability in OpenCVDynamicOpenPanguVideoBackend, which uses request-controlled num_frames without an effective ceiling. Unauthenticated attackers can send /v1/chat/completions or /tokenize requests selecting the openpangu video_backend with a huge num_frames, forcing np.linspace allocations and CPU work that OOM-kill the API server.

From the CVE Program.

Affected software

SoftwareAffected versions
vLLMServers and applications · cna:vllm-project|vllm
  • From 0.30.0 before 0.31.0

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-126394