# CVE-2026-111986: AUTOMATIC1111 stable-diffusion-webui Model Instantiation sd_models.py get_obj_from_str code injection

> Remote attackers can execute arbitrary code via the get_obj_from_str function in AUTOMATIC1111 stable-diffusion-webui.

- **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:** 18 Oct 2026
- **Updated:** 22 Oct 2026
- **Also known as:** GHSA-g6c9-c3gc-jcqg

## What is CVE-2026-111986?

CVE-2026-111986 is a medium-severity code injection vulnerability in AUTOMATIC1111 stable-diffusion-webui, published on 18 Oct 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 was determined in AUTOMATIC1111 stable-diffusion-webui up to 1.10.1. Affected is the function get_obj_from_str of the file modules/sd_models.py of the component Model Instantiation. This manipulation of the argument Target causes code injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. The project was informed of the problem early through an issue report but has not responded yet.

Weakness: CWE-94 (Improper Control of Generation of Code), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-111986?


## How do I fix CVE-2026-111986?

No fix has been published for CVE-2026-111986 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-111986 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-111986 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-111986 and fix it if it is affected.

What it is: CVE-2026-111986 is a medium-severity code injection vulnerability in AUTOMATIC1111 stable-diffusion-webui, published on 18 Oct 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-2026-111986 exists.

Affected product: AUTOMATIC1111 stable-diffusion-webui. 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-2026-111986/ (Markdown: https://insights.sbomify.com/CVE-2026-111986/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-111986
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-111986
- OSV: https://osv.dev/vulnerability/CVE-2026-111986

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-111986/
Summaries are generated and may contain mistakes; the official description above is the record.