Description

libcurl could accidentally return a URL for `curl_easy_getinfo()`'s `CURLINFO_EFFECTIVE_URL` option containing credentials, even though neither the URL provided to libcurl nor the redirected URL did.

Is your site exposed to CVE-2026-94266?

Run a free security scan — no signup, results in seconds.

Scan my site

References

Other References

https://curl.se/docs/CVE-2026-94266.html https://curl.se/docs/CVE-2026-94266.json https://hackerone.com/reports/4041053

Frequently Asked Questions

What is CVE-2026-94266? +

libcurl could accidentally return a URL for `curl_easy_getinfo()`'s `CURLINFO_EFFECTIVE_URL` option containing credentials, even though neither the URL provided to libcurl nor the redirected URL did.

How do I check if I'm vulnerable to CVE-2026-94266? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.