# CVE-2026-105812: Code injection in bedrock-agentcore-starter-toolkit

> Authenticated users can execute arbitrary code by importing agents with crafted configuration values in the Bedrock AgentCore Starter Toolkit.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 6 Oct 2026
- **Updated:** 7 Oct 2026

## What is CVE-2026-105812?

CVE-2026-105812 is a high-severity code injection vulnerability in aws bedrock-agentcore-starter-toolkit, published on 6 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Improper control of code generation in the agent import functionality of Amazon Bedrock AgentCore Starter Toolkit before 0.3.14 might allow an authenticated same-account actor to execute arbitrary code when a user imports and runs or deploys a Bedrock Agent, via crafted configuration values incorporated into generated Python source without safe literal encoding.

To remediate this issue, users should upgrade to version 0.3.14. Because this issue persists into generated source, upgrading alone is not sufficient: agents imported with an affected version must be re-imported with version 0.3.14 or later and their local and deployed output artifacts replaced.

Weakness: CWE-94 (Improper Control of Generation of Code)

## Which versions are affected by CVE-2026-105812?


## How do I fix CVE-2026-105812?

No fix has been published for CVE-2026-105812 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-105812 being exploited?

There is no known exploitation of CVE-2026-105812 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-105812 and fix it if it is affected.

What it is: CVE-2026-105812 is a high-severity code injection vulnerability in aws bedrock-agentcore-starter-toolkit, published on 6 Oct 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-105812 in the wild and no public exploit code.

Affected product: aws bedrock-agentcore-starter-toolkit. 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-2026-105812/ (Markdown: https://insights.sbomify.com/CVE-2026-105812/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-105812
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-105812
- OSV: https://osv.dev/vulnerability/CVE-2026-105812

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-105812/
Summaries are generated and may contain mistakes; the official description above is the record.