# CVE-2025-4894: calmkart Django-sso-server crypto.py gen_rsa_keys inadequate encryption

> Inadequate encryption strength in the RSA key generation function allows attackers to potentially bypass security controls.

- **Severity:** Medium 6.3 (`CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 18 May 2025
- **Updated:** 19 May 2025
- **Also known as:** GHSA-2445-4c8x-52p7

## What is CVE-2025-4894?

CVE-2025-4894 is a medium-severity vulnerability in calmkart Django-sso-server, published on 18 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability classified as problematic was found in calmkart Django-sso-server up to 057247929a94ffc358788a37ab99e391379a4d15. This vulnerability affects the function gen_rsa_keys of the file common/crypto.py. The manipulation leads to inadequate encryption strength. The attack can be initiated remotely. The complexity of an attack is rather high. The exploitation appears to be difficult. This product is using a rolling release to provide continious delivery. Therefore, no version details for affected nor updated releases are available.

Weakness: CWE-326 (Inadequate Encryption Strength), CWE-310

## Which versions are affected by CVE-2025-4894?

It affects 1 product.


Products: Calmkart Django-Sso-Server.

## How do I fix CVE-2025-4894?

No fix has been published for CVE-2025-4894 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-4894 being exploited?

There is no known exploitation of CVE-2025-4894 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-4894 and fix it if it is affected.

What it is: CVE-2025-4894 is a medium-severity vulnerability in calmkart Django-sso-server, published on 18 May 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2025-4894 in the wild and no public exploit code.

Affected product: calmkart Django-sso-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-2025-4894/ (Markdown: https://insights.sbomify.com/CVE-2025-4894/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-4894
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-4894
- OSV: https://osv.dev/vulnerability/CVE-2025-4894

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-4894/
Summaries are generated and may contain mistakes; the official description above is the record.