# CVE-2026-12944: Incomplete Security Scanner Blocklist Enables Network-Based Code Execution

> Attackers can execute arbitrary Python code with root privileges by bypassing the security scanner, leading to credential theft and lateral movement.

- **Severity:** Critical 9.6 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Sep 2026
- **Updated:** 16 Sep 2026
- **Also known as:** GHSA-277g-2342-m332

## What is CVE-2026-12944?

CVE-2026-12944 is a critical code injection vulnerability in IBM Langflow OSS, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

IBM Langflow OSS 1.0.0 through 1.10.0 can allow attackers to execute arbitrary Python code with root privileges (UID=0) on the Langflow server by submitting components containing socket or urllib imports. This enables: (1) AWS credential theft via IMDSv1 SSRF with full IAM role permissions, (2) arbitrary file exfiltration from the container filesystem, and (3) lateral movement to internal services (PostgreSQL, Redis) within the Docker network. The scanner incorrectly returns "validated": true, providing a false security signal.

Weakness: CWE-918 (Server-Side Request Forgery)

## Which versions are affected by CVE-2026-12944?


## How do I fix CVE-2026-12944?

No fix has been published for CVE-2026-12944 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-12944 being exploited?

There is no known exploitation of CVE-2026-12944 in the wild and no public exploit code.

Public exploit code:

- Langflow 1.10.0 urllib SSRF  (github_poc): https://github.com/ShadowForge-Cyber/CVE-2026-12944

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-12944 and fix it if it is affected.

What it is: CVE-2026-12944 is a critical code injection vulnerability in IBM Langflow OSS, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-12944 in the wild and no public exploit code.

Affected product: IBM Langflow OSS. 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-2026-12944/ (Markdown: https://insights.sbomify.com/CVE-2026-12944/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-12944
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-12944
- OSV: https://osv.dev/vulnerability/CVE-2026-12944

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-12944/
Summaries are generated and may contain mistakes; the official description above is the record.