# CVE-2022-50940: Knap Advanced PHP Login 3.1.3 Persistent Cross-Site Scripting via Name Parameter

> Remote attackers can inject malicious scripts via the name parameter, leading to session hijacking and phishing in the Knap Advanced PHP Login application.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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:** No
- **Published:** 1 Feb 2026
- **Updated:** 3 Feb 2026
- **Also known as:** GHSA-ghjx-f567-jrj4

## What is CVE-2022-50940?

CVE-2022-50940 is a medium-severity cross-site scripting vulnerability in ajay138 Knap Advanced PHP Login, published on 1 Feb 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

Knap Advanced PHP Login 3.1.3 contains a persistent cross-site scripting vulnerability that allows remote attackers to inject malicious script code in the name parameter. Attackers can exploit the vulnerability to execute arbitrary scripts in users and activity log backend modules, potentially leading to session hijacking and persistent phishing attacks.

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

## Which versions are affected by CVE-2022-50940?


## How do I fix CVE-2022-50940?

No fix has been published for CVE-2022-50940 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-50940 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-50940 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-50940 and fix it if it is affected.

What it is: CVE-2022-50940 is a medium-severity cross-site scripting vulnerability in ajay138 Knap Advanced PHP Login, published on 1 Feb 2026. 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-2022-50940 exists.

Affected product: ajay138 Knap Advanced PHP Login. 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-2022-50940/ (Markdown: https://insights.sbomify.com/CVE-2022-50940/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-50940
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-50940
- OSV: https://osv.dev/vulnerability/CVE-2022-50940

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-50940/
Summaries are generated and may contain mistakes; the official description above is the record.