# CVE-2021-30058: Cross-site scripting in n/a

> An attacker can inject arbitrary scripts into Knowage Suite via the SBI_HOST parameter, potentially leading to code execution or account takeover.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 5 Apr 2021
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-9m4q-9h42-w37g

## What is CVE-2021-30058?

CVE-2021-30058 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Apr 2021. 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

Knowage Suite before 7.4 is vulnerable to cross-site scripting (XSS). An attacker can inject arbitrary external script in '/knowagecockpitengine/api/1.0/pages/execute' via the 'SBI_HOST' parameter.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2021-30058?

It affects 1 product.


Products: Eng Knowage.

## How do I fix CVE-2021-30058?

No fix has been published for CVE-2021-30058 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-30058 being exploited?

There is no known exploitation of CVE-2021-30058 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2023-38702](https://insights.sbomify.com/CVE-2023-38702/): Knowage Server vulnerable to path traversal via upload functionality (critical 10.0)
- [CVE-2019-13188](https://insights.sbomify.com/CVE-2019-13188/): Auth bypass in n/a (critical 9.8)
- [CVE-2025-59954](https://insights.sbomify.com/CVE-2025-59954/): Knowage Contains a Remote Code Execution Vulnerability (critical 9.3)
- [CVE-2021-30055](https://insights.sbomify.com/CVE-2021-30055/): SQL injection in n/a (high 8.8)
- [CVE-2019-13348](https://insights.sbomify.com/CVE-2019-13348/): Information disclosure in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-30058 and fix it if it is affected.

What it is: CVE-2021-30058 is a medium-severity cross-site scripting vulnerability in n/a, published on 5 Apr 2021. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2021-30058 in the wild and no public exploit code.

Affected product: n/a. 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-2021-30058/ (Markdown: https://insights.sbomify.com/CVE-2021-30058/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-30058
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-30058
- OSV: https://osv.dev/vulnerability/CVE-2021-30058

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-30058/
Summaries are generated and may contain mistakes; the official description above is the record.