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CVE-2025-4366 — Vulnerability in pingora-core — CVE Details

HIGH

Pingora has a Request Smuggling Vulnerability

Published June 20, 2025Updated June 20, 2025Source: osv

Summary

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. ### Fixed in https://github.com/cloudflare/pingora/commit/fda3317ec822678564d641e7cf1c9b77ee3759ff ### Impact The issue could lead to request smuggling in cases where Pingora’s proxying framework, pingora-proxy, is used for caching allowing an attacker to manipulate headers and URLs in subsequent requests made on the same HTTP/1.1 connection.

Advisory Timeline

  • First published June 20, 2025 (479 days ago).
  • Last revised June 20, 2025 — 0 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo
Update pingora-core to 0.5.0 or later
cargo update -p pingora-core --precise 0.5.0

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

PackageEcosystemAffectedFixed In
pingora-core
crates.io
All versions0.5.0

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
A
Scope
—
Confidentiality
—
Integrity
—
Availability
—

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

References

Frequently Asked Questions

What is CVE-2025-4366?
Pingora has a Request Smuggling Vulnerability This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2025-4366?
CVE-2025-4366 affects pingora-core. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2025-4366 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-93c7-7xqw-w357
RUSTSEC-2025-0037

Related CVEs

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  • CVE-2026-2835
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  • CVE-2026-2835
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    Pingora has HTTP Request Smuggling via HTTP/1.0 and Transfer-Encoding Misparsing

  • CVE-2026-2833
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