CVE-2026-116502 turboderp-org ExLlamaV2 GPTQ Index q_matrix.cu make_sequential out-of-bounds write

Medium 4.8 Published Updated
Exploited in the wild
Not known
Fix
None listed

What is CVE-2026-116502?

CVE-2026-116502 is a medium-severity vulnerability in turboderp-org ExLlamaV2, published on 26 Oct 2026.

Official description

A flaw has been found in turboderp-org ExLlamaV2 up to 0.3.2. The impacted element is the function QMatrix::make_sequential of the file exllamav2/exllamav2_ext/cuda/q_matrix.cu of the component GPTQ Index Handler. Executing a manipulation of the argument g_idx can lead to out-of-bounds write. The attack needs to be launched locally. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-787, CWE-119

Which versions are affected by CVE-2026-116502?

How do I fix CVE-2026-116502?

No fix has been published for CVE-2026-116502 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-116502 being exploited?

There is no known exploitation of CVE-2026-116502 in the wild and no public exploit code.

Sources

Also known as GHSA-56qq-ww5r-ph3r.

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