# CVE-2026-108955: Tiiny-AI PowerInfer GGUF ggml.c gguf_init_from_file out-of-bounds

> Local attackers can trigger an out-of-bounds read in the GGUF parser, potentially causing information disclosure or crashes.

- **Severity:** Medium 4.8 (`CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 13 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-j6ch-mq7f-f9j6

## What is CVE-2026-108955?

CVE-2026-108955 is a medium-severity memory corruption vulnerability in Tiiny-AI PowerInfer, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability was determined in Tiiny-AI PowerInfer up to 8bd56d69906c9d2dba4d3bf6899763401e01a9a4. Impacted is the function gguf_init_from_file of the file ggml.c of the component GGUF Parser. This manipulation of the argument data_offset causes out-of-bounds read. The attack requires local access. The exploit has been publicly disclosed and may be utilized. This product uses a rolling release model to deliver continuous updates. As a result, specific version information for affected or updated releases is not available. The pull request to fix this issue awaits acceptance.

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-2026-108955?


## How do I fix CVE-2026-108955?

No fix has been published for CVE-2026-108955 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-108955 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108955 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-108955 and fix it if it is affected.

What it is: CVE-2026-108955 is a medium-severity memory corruption vulnerability in Tiiny-AI PowerInfer, published on 13 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-108955 exists.

Affected product: Tiiny-AI PowerInfer. 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-2026-108955/ (Markdown: https://insights.sbomify.com/CVE-2026-108955/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-108955
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-108955
- OSV: https://osv.dev/vulnerability/CVE-2026-108955

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-108955/
Summaries are generated and may contain mistakes; the official description above is the record.