# CVE-2026-8602: Missing authentication for critical function in ScadaBR

> Unauthenticated attackers can inject arbitrary sensor readings into the SCADA system via HTTP GET requests.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 May 2026
- **Updated:** 19 May 2026
- **Also known as:** GHSA-jvgx-g9vj-2c98

## What is CVE-2026-8602?

CVE-2026-8602 is a high-severity missing authorization vulnerability in ScadaBR, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

In ScadaBR version 1.2.0, a Missing Authentication for Critical Function vulnerability could allow an unauthenticated attacker to send a HTTP GET requests to the SCADA system and inject arbitrary sensor readings.

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2026-8602?

It affects 1 product.


Products: Scadabr Scadabr.

## How do I fix CVE-2026-8602?

No fix has been published for CVE-2026-8602 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-8602 being exploited?

There is no known exploitation of CVE-2026-8602 in the wild and no public exploit code.

## Other vulnerabilities in ScadaBR

- [CVE-2021-26828](https://insights.sbomify.com/CVE-2021-26828/): OpenPLC ScadaBR Unrestricted Upload of File with Dangerous Type (high 8.8, exploited in the wild)
- [CVE-2021-26829](https://insights.sbomify.com/CVE-2021-26829/): OpenPLC ScadaBR Cross-site Scripting (medium 5.4, exploited in the wild)
- [CVE-2026-9645](https://insights.sbomify.com/CVE-2026-9645/): ScadaBR Authenticated Remote Code Execution (critical 9.9)
- [CVE-2026-8603](https://insights.sbomify.com/CVE-2026-8603/): Improper neutralization of special elements used in an OS command ('OS command injection') in ScadaBR (high 8.7)
- [CVE-2026-8604](https://insights.sbomify.com/CVE-2026-8604/): Cross-Site request forgery (CSRF) in ScadaBR (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-8602 and fix it if it is affected.

What it is: CVE-2026-8602 is a high-severity missing authorization vulnerability in ScadaBR, published on 19 May 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-8602 in the wild and no public exploit code.

Affected product: ScadaBR. 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-2026-8602/ (Markdown: https://insights.sbomify.com/CVE-2026-8602/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-8602
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-8602
- OSV: https://osv.dev/vulnerability/CVE-2026-8602

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-8602/
Summaries are generated and may contain mistakes; the official description above is the record.