# CVE-2022-39295: Improper Neutralization of Alternate XSS Syntax in Knowage-Server

> An attacker can execute arbitrary scripts in the Knowage business analytics server by bypassing XSS filters, potentially leading to session hijacking or data theft.

- **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:** 13 Oct 2022
- **Updated:** 22 Apr 2025
- **Also known as:** GHSA-f2gr-6h9j-rwcw

## What is CVE-2022-39295?

CVE-2022-39295 is a medium-severity cross-site scripting vulnerability in KnowageLabs Knowage-Server, published on 13 Oct 2022. 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 is an open source suite for modern business analytics alternative over big data systems. KnowageLabs / Knowage-Server starting with the 6.x branch and prior to versions 7.4.22, 8.0.9, and 8.1.0 is vulnerable to cross-site scripting because the `XSSRequestWrapper::stripXSS` method can be bypassed. Versions 7.4.22, 8.0.9, and 8.1.0 contain patches for this issue. There are no known workarounds.

Weakness: CWE-87 (Improper Neutralization of Alternate XSS Syntax), CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2022-39295?

It affects 1 product.


Products: Eng Knowage.

## How do I fix CVE-2022-39295?

No fix has been published for CVE-2022-39295 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-39295 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-39295 exists.

## Other vulnerabilities in KnowageLabs Knowage-Server

- [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-2022-39295 and fix it if it is affected.

What it is: CVE-2022-39295 is a medium-severity cross-site scripting vulnerability in KnowageLabs Knowage-Server, published on 13 Oct 2022. 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-2022-39295 exists.

Affected product: KnowageLabs Knowage-Server. 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-2022-39295/ (Markdown: https://insights.sbomify.com/CVE-2022-39295/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-39295
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-39295
- OSV: https://osv.dev/vulnerability/CVE-2022-39295

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-39295/
Summaries are generated and may contain mistakes; the official description above is the record.