# CVE-2026-86288: ModelCloud GPTQModel Triton dequantization kernel tritonv2.py out-of-bounds

> Remote attackers can trigger out-of-bounds reads in the Triton dequantization kernel via manipulated arguments, potentially exposing memory or causing crashes.

- **Severity:** Medium 5.3 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 7 Sep 2026
- **Updated:** 8 Sep 2026
- **Also known as:** GHSA-4jpr-qjj4-9r96

## What is CVE-2026-86288?

CVE-2026-86288 is a medium-severity memory corruption vulnerability in ModelCloud GPTQModel, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A vulnerability has been found in ModelCloud GPTQModel up to 7.2.0. This vulnerability affects unknown code of the file gptqmodel/nn_modules/qlinear/tritonv2.py of the component Triton dequantization kernel. Such manipulation of the argument g_idx leads to out-of-bounds read. The attack can be executed remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 7.3.0 is able to resolve this issue. The name of the patch is 877c732f7d7dccd56a729844c6a5bd20f3aa8bb1. Upgrading the affected component is recommended.

Weakness: CWE-125 (Out-of-bounds Read), CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2026-86288?


## How do I fix CVE-2026-86288?

No fix has been published for CVE-2026-86288 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-86288 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86288 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-86288 and fix it if it is affected.

What it is: CVE-2026-86288 is a medium-severity memory corruption vulnerability in ModelCloud GPTQModel, published on 7 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-86288 exists.

Affected product: ModelCloud GPTQModel. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-86288/ (Markdown: https://insights.sbomify.com/CVE-2026-86288/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-86288
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-86288
- OSV: https://osv.dev/vulnerability/CVE-2026-86288

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-86288/
Summaries are generated and may contain mistakes; the official description above is the record.