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  5. CVE-2025-4366

CVE-2025-4366: Pingora has a Request Smuggling Vulnerability

June 20, 2025 (updated November 10, 2025)

A request smuggling vulnerability identified within Pingora’s proxying framework, pingora-proxy, allows malicious HTTP requests to be injected via manipulated request bodies on cache HITs, leading to unauthorized request execution and potential cache poisoning.

References

  • blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora
  • github.com/advisories/GHSA-93c7-7xqw-w357
  • github.com/cloudflare/pingora
  • github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff
  • github.com/cloudflare/pingora/security/advisories/GHSA-93c7-7xqw-w357
  • nvd.nist.gov/vuln/detail/CVE-2025-4366
  • rustsec.org/advisories/RUSTSEC-2025-0037.html

Code Behaviors & Features

Detect and mitigate CVE-2025-4366 with GitLab Dependency Scanning

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Affected versions

All versions before 0.5.0

Fixed versions

  • 0.5.0

Solution

Upgrade to version 0.5.0 or above.

Impact 6.1 MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Learn more about CVSS

Weakness

  • CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')

Source file

cargo/pingora-core/CVE-2025-4366.yml

Spotted a mistake? Edit the file on GitLab.

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