Search criteria
2 vulnerabilities found for ssrfcheck by felippe-regazio
CVE-2026-43929 (GCVE-0-2026-43929)
Vulnerability from nvd – Published: 2026-05-12 17:49 – Updated: 2026-05-13 14:37
VLAI
Title
ssrfcheck: Server-Side Request Forgery (SSRF) and Incomplete List of Disallowed Inputs
Summary
ssrfcheck is a library that checks if a string contains a potential SSRF attack. In 1.3.0 and earlier, ssrfcheck fails to block Server-Side Request Forgery attacks when the target private IP address is encoded as an IPv4-mapped IPv6 address (e.g. http://[::ffff:127.0.0.1]/). The WHATWG URL parser built into Node.js silently normalizes the IPv4 notation inside the brackets to compressed hex form ([::ffff:7f00:1]) before the library's private-IP regex ever runs. The regex was written to match dot-notation only and therefore never matches any real input — all seven IANA private IPv4 ranges, including the AWS/GCP/Azure metadata address 169.254.169.254, are bypassed. Any application using isSSRFSafeURL() to guard HTTP requests made with user-supplied URLs is fully exposed to SSRF.
Severity
8.2 (High)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/felippe-regazio/ssrfcheck/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| felippe-regazio | ssrfcheck |
Affected:
<= 1.3.0
|
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CVE-2026-43929 (GCVE-0-2026-43929)
Vulnerability from cvelistv5 – Published: 2026-05-12 17:49 – Updated: 2026-05-13 14:37
VLAI
Title
ssrfcheck: Server-Side Request Forgery (SSRF) and Incomplete List of Disallowed Inputs
Summary
ssrfcheck is a library that checks if a string contains a potential SSRF attack. In 1.3.0 and earlier, ssrfcheck fails to block Server-Side Request Forgery attacks when the target private IP address is encoded as an IPv4-mapped IPv6 address (e.g. http://[::ffff:127.0.0.1]/). The WHATWG URL parser built into Node.js silently normalizes the IPv4 notation inside the brackets to compressed hex form ([::ffff:7f00:1]) before the library's private-IP regex ever runs. The regex was written to match dot-notation only and therefore never matches any real input — all seven IANA private IPv4 ranges, including the AWS/GCP/Azure metadata address 169.254.169.254, are bypassed. Any application using isSSRFSafeURL() to guard HTTP requests made with user-supplied URLs is fully exposed to SSRF.
Severity
8.2 (High)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/felippe-regazio/ssrfcheck/secu… | x_refsource_CONFIRM |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| felippe-regazio | ssrfcheck |
Affected:
<= 1.3.0
|
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