_Discovered in early 2025, CVE-2025-52694 has emerged as a high-priority security threat for anyone running the affected software stack. This long read will explain what CVE-2025-52694 is, how attackers can exploit it, and what you must do now to protect your services and data._

What is CVE-2025-52694?

CVE-2025-52694 is a recently patched SQL injection vulnerability affecting certain versions of the popular OpenDataPortal web service. The flaw exists due to improper input sanitization in the API endpoint responsible for querying user information.

Severity:

Why is This Vulnerability Dangerous?

This vulnerability allows anyone on the internet to craft a malicious web request to the exposed service and run arbitrary SQL commands. If your service is not isolated from the public, your data’s confidentiality, integrity, and availability can all be compromised. Attackers could:

The vulnerable endpoint /api/user/search expects a JSON body like

{ "username": "alice" }

Internally, the server constructs an SQL query without sufficient sanitization

# Vulnerable Python code snippet (for illustration):
@app.route('/api/user/search', methods=['POST'])
def user_search():
    username = request.json.get('username', '')
    query = "SELECT * FROM users WHERE username = '%s'" % username
    result = db.execute(query)
    return jsonify(result.fetchall())

Attackers can insert SQL code directly in the username field. For instance, sending

{ "username": "' OR '1'='1" }

Results in the server executing

SELECT * FROM users WHERE username = '' OR '1'='1'

Which returns _all users_. It gets worse: with stacked queries and more injection, attackers can begin modifying or deleting data.

Here's a curl command that performs a simple dump of all user data

curl -X POST https://vulnerable.site/api/user/search \
  -H "Content-Type: application/json" \
  --data '{"username": "' OR 1=1-- "}'

With some variants of the backend code, attackers can even run destructive commands. For example

{ "username": "'; DROP TABLE users; -- " }

Real World Impact

- Automatic Bot Attacks: Search engines and attackers are already scanning for this and exploiting unpatched internet-facing deployments.
- Data Breaches: Any private or customer data in this service may already be compromised if you run a vulnerable version and haven’t updated.
- Ransom/Defacement: Attackers may erase or deface databases, leaving companies with downtime and reputational damage.

How To Fix It

OpenDataPortal maintainers released a fixed version (v3.2.1 and newer) which uses parameterized queries.

Old (Vulnerable)

query = "SELECT * FROM users WHERE username = '%s'" % username
result = db.execute(query)

Fixed (Safe)

query = "SELECT * FROM users WHERE username = %s"
result = db.execute(query, (username,))

- Download the latest patch

- OpenDataPortal Official Release Notes

Upgrade instructions are here:

- How To Update

Review & Monitor Systems:

- Check your logs for any suspicious /api/user/search requests.

References & Further Reading

- NVD Entry for CVE-2025-52694
- OpenDataPortal Security Advisory (GHSA-xxxx-yyyy-zzzz)
- OWASP SQL Injection Cheat Sheet

Conclusion

CVE-2025-52694 is a critical SQL injection flaw that can be devastating if left unpatched. Unauthenticated attackers can steal, modify, or destroy your data. Updating is easy, and moving quickly could prevent serious loss.

If you run OpenDataPortal, update now. If you’re not sure, stop reading and check your servers. The attackers aren’t waiting—neither should you.


_If you found this guide useful, share it with your IT/security team and help spread awareness about CVE-2025-52694._

Timeline

Published on: 01/12/2026 02:27:16 UTC
Last modified on: 01/26/2026 03:15:49 UTC