CVE Catalog

CVE-2026-42175

MediumCVSS 6.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.31%

23th percentile - higher than 23% of all known CVEs

Summary

The SSRF protection in requests-hardened fails to block IP addresses within the RFC 6598 Shared Address Space (100.64.0.0/10). An attacker who can supply arbitrary URLs could exploit this gap to access internal services hosted within that range, e.g., in environments such as AWS EKS.

Risk Assessment

In environments using 100.64.0.0/10 for internal networking, SSRF protection can be bypassed, exposing internal services.

Recommendation

Update requests-hardened to a version containing the fix and verify whether 100.64.0.0/10 is used in your infrastructure.

Related vulnerabilities

Original NVD description (English source)

requests-hardened is a library that overrides the default behaviors of the requests library, and adds new security features. Prior to , the SSRF protection in requests-hardened fails to block IP addresses within the RFC 6598 Shared Address Space (100.64.0.0/10). An attacker who can supply arbitrary URLs to requests-hardened could exploit this gap to access internal services hosted within 100.64.0.0/10. This is for example relevant in environments such as AWS EKS where 100.64.0.0/10 is commonly used as the default pod CIDR. The impact is environment-dependent, deployments that utilize the affected CIDR range for internal networking are exposed to SSRF bypass, while others may not be affected. This vulnerability is fixed in .

Vulnerability data from NVD (NIST) · CISA KEV · EPSS