# CVE-2025-62428: Drawing-Captcha APP Host Header Injection in `/register` and `/confirm-email` Endpoints

> Attackers can manipulate Host headers to generate malicious email links, redirecting users to attacker-controlled domains during registration or verification.

- **Severity:** High 8.8 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/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:** Not needed
- **Fix available:** No
- **Published:** 16 Oct 2025
- **Updated:** 17 Oct 2025
- **Also known as:** GHSA-5pj8-fc6g-vv7m

## What is CVE-2025-62428?

CVE-2025-62428 is a high-severity vulnerability in Drawing-Captcha-APP, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Drawing-Captcha APP provides interactive, engaging verification for Web-Based Applications. The vulnerability is a Host Header Injection in the /register and /confirm-email endpoints. It allows an attacker to manipulate the Host header in HTTP requests to generate malicious email confirmation links. These links can redirect users to attacker-controlled domains. This vulnerability affects all users relying on email confirmation for account registration or verification. This vulnerability is fixed in 1.2.5-alpha-patch.

Weakness: CWE-601 (URL Redirection to Untrusted Site)

## Which versions are affected by CVE-2025-62428?


## How do I fix CVE-2025-62428?

No fix has been published for CVE-2025-62428 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-62428 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62428 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-62428 and fix it if it is affected.

What it is: CVE-2025-62428 is a high-severity vulnerability in Drawing-Captcha-APP, published on 16 Oct 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-62428 exists.

Affected product: Drawing-Captcha-APP. 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-2025-62428/ (Markdown: https://insights.sbomify.com/CVE-2025-62428/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-62428
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-62428
- OSV: https://osv.dev/vulnerability/CVE-2025-62428

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-62428/
Summaries are generated and may contain mistakes; the official description above is the record.