# CVE-2022-40849: ThinkCMF Stored Cross-Site Scripting (XSS)

> Attackers can inject persistent JavaScript in ThinkCMF Slideshow Management to steal administrator session tokens and take over accounts.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N`)
- **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:** Yes
- **Published:** 1 Dec 2022
- **Updated:** 24 Apr 2025
- **Also known as:** GHSA-m9mf-rqx6-2xpc

## What is CVE-2022-40849?

CVE-2022-40849 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Dec 2022. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

ThinkCMF version 6.0.7 is affected by Stored Cross-Site Scripting (XSS). An attacker who successfully exploited this vulnerability could inject a Persistent XSS payload in the Slideshow Management section that execute arbitrary JavaScript code on the client side, e.g., to steal the administrator's PHP session token (PHPSESSID).

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

## Which versions are affected by CVE-2022-40849?

2 open source packages ship an affected version, including thinkcmf/thinkcmf. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `thinkcmf/thinkcmf` | Packagist | All versions | 6.0.8 |
| `thinkcmf/thinkcmf` | Packagist | All versions | 6.0.8 |

Products: Thinkcmf Thinkcmf.

## How do I fix CVE-2022-40849?

Upgrade thinkcmf/thinkcmf to 6.0.8 or later.

## Is CVE-2022-40849 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-40849 exists.

## Other vulnerabilities in n/a

- [CVE-2024-31615](https://insights.sbomify.com/CVE-2024-31615/): File upload in n/a (critical 9.8)
- [CVE-2020-20601](https://insights.sbomify.com/CVE-2020-20601/): Code injection in n/a (critical 9.8)
- [CVE-2019-6713](https://insights.sbomify.com/CVE-2019-6713/): Code injection in n/a (critical 9.8)
- [CVE-2022-40489](https://insights.sbomify.com/CVE-2022-40489/): ThinkCMF Cross Site Request Forgery (CSRF) vulnerability (high 8.8)
- [CVE-2019-7580](https://insights.sbomify.com/CVE-2019-7580/): Code injection in n/a (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-40849 and fix it if it is affected.

What it is: CVE-2022-40849 is a medium-severity cross-site scripting vulnerability in n/a, published on 1 Dec 2022. Any signed-in user can exploit it over the network, 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-2022-40849 exists.

Affected packages and fixed versions:
- thinkcmf/thinkcmf (Packagist): affected all versions; fixed in 6.0.8
- thinkcmf/thinkcmf (Packagist): affected all versions; fixed in 6.0.8

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-2022-40849/ (Markdown: https://insights.sbomify.com/CVE-2022-40849/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-40849
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-40849
- OSV: https://osv.dev/vulnerability/CVE-2022-40849

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-40849/
Summaries are generated and may contain mistakes; the official description above is the record.