CVE-2026-42175

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 .

• CWE-918

• https://github.com/saleor/requests-hardened/commit/a266b3958bb142bca515b3c230fdea19fbda327c
• https://github.com/saleor/requests-hardened/commit/b7403f88d3b3689e57435b75b51691a160aaeef5
• https://github.com/saleor/requests-hardened/releases/tag/v1.2.1
• https://github.com/saleor/requests-hardened/security/advisories/GHSA-vh75-fwv3-pqrh

Published

May 12, 2026

Last Modified

Jun 17, 2026

Status

Deferred

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