# CVE-2026-4590: kalcaddle kodbox loginSubmit API index.class.php cross-site request forgery

> Cross-site request forgery in kodbox loginSubmit API allows attackers to manipulate third-party authentication bindings, potentially leading to account takeover.

- **Severity:** Low 2.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P`)
- **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:** 23 Mar 2026
- **Updated:** 23 Mar 2026
- **Also known as:** GHSA-9gjx-rgv5-g8mx

## What is CVE-2026-4590?

CVE-2026-4590 is a low-severity vulnerability in kalcaddle kodbox, published on 23 Mar 2026. 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

A security flaw has been discovered in kalcaddle kodbox 1.64. The impacted element is an unknown function of the file /workspace/source-code/plugins/oauth/controller/bind/index.class.php of the component loginSubmit API. Performing a manipulation of the argument third results in cross-site request forgery. Remote exploitation of the attack is possible. A high degree of complexity is needed for the attack. The exploitability is regarded as difficult. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-862 (Missing Authorization), CWE-352 (Cross-Site Request Forgery)

## Which versions are affected by CVE-2026-4590?


## How do I fix CVE-2026-4590?

No fix has been published for CVE-2026-4590 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-4590 being exploited?

There is no known exploitation of CVE-2026-4590 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-4590 and fix it if it is affected.

What it is: CVE-2026-4590 is a low-severity vulnerability in kalcaddle kodbox, published on 23 Mar 2026. 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-2026-4590 in the wild and no public exploit code.

Affected product: kalcaddle kodbox. 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-2026-4590/ (Markdown: https://insights.sbomify.com/CVE-2026-4590/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-4590
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-4590
- OSV: https://osv.dev/vulnerability/CVE-2026-4590

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-4590/
Summaries are generated and may contain mistakes; the official description above is the record.