GHSA-3qmp-g57h-rxf2: Duplicate Advisory Pingora Request Smuggling And Cache Vulnerability

HIGH
Share
CWE-444
Published
Advisory Summary

GHSA-3qmp-g57h-rxf2 is a HIGH pingora request smuggling and cache vulnerability (CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')) affecting Duplicate Advisory libraries in the crates.io ecosystem. The issue involves pingora request smuggling and cache poisoning. Remediation is available by upgrading affected packages to version 0.5.0.

GHSA-3qmp-g57h-rxf2 at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-3qmp-g57h-rxf2
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Affected Product Duplicate Advisory
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-3qmp-g57h-rxf2

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

pingora-core fixed: 0.5.0 
Upgrade pingora-core to 0.5.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for pingora-core

How to Check if You Are Affected

To determine whether your application is affected by GHSA-3qmp-g57h-rxf2, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for pingora-core

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.5.0), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling'), where the product acts as an intermediary http agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed http requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-93c7-7xqw-w357. This link is maintained to preserve external references. ### Original Description Pingora versions prior to 0.5.0 which used the caching functionality in pingora-proxy did not properly drain the downstream request body on cache hits. This allows an attacker to craft malicious HTTP/1.1 requests which could lead to request smuggling or cache poisoning. This flaw was corrected in commit fda3317ec822678564d641e7cf1c9b77ee3759ff by ensuring that the downstream request body is always drained before a connection can be reused. See [the blog post](https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora/) for more information.

GHSA-3qmp-g57h-rxf2 Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.5.0
Product / Package Ecosystem Affected Versions Fixed Version
pingora-core
 crates.io
< 0.5.0
0.5.0

References

NVD — GHSA-3qmp-g57h-rxf2 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-4366
blog.cloudflare.com/resolving-a-request... WEB
https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora
Duplicate Advisory Source Repository REPOSITORY
https://github.com/cloudflare/pingora
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2025-0037.html

Frequently Asked Questions

What is GHSA-3qmp-g57h-rxf2?
GHSA-3qmp-g57h-rxf2 is a security vulnerability in Duplicate Advisory involving Pingora Request Smuggling and Cache Poisoning under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling').
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.5.0 across affected packages: pingora-core.
What version fixes GHSA-3qmp-g57h-rxf2?
Upgrading to 0.5.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is pingora-core affected?
Yes, pingora-core is affected in releases prior to 0.5.0. Upgrade your dependency to 0.5.0 or later.
What CWE is associated with GHSA-3qmp-g57h-rxf2?
GHSA-3qmp-g57h-rxf2 is classified under CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') (The product acts as an intermediary HTTP agent (such as a proxy or firewall) in the data flow between two entities such as a client and server, but it does not interpret malformed HTTP requests or responses in ways that are consistent with how the messages will be processed by those entities that are at the ultimate destination.).
How can I check crates.io dependencies for GHSA-3qmp-g57h-rxf2?
Run the dependency tree command: 'inspect dependencies for pingora-core'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-3qmp-g57h-rxf2",
  "modified" : "2025-06-20T18:07:39Z",
  "published" : "2025-05-22T20:25:15Z",
  "withdrawn" : "2025-06-20T18:07:39Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: Pingora Request Smuggling and Cache Poisoning",
  "details" : "### Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-93c7-7xqw-w357. This link is maintained to preserve external references.\n\n### Original Description\n\nPingora versions prior to 0.5.0 which used the caching functionality in pingora-proxy did not properly drain the downstream request body on cache hits.\n\nThis allows an attacker to craft malicious HTTP/1.1 requests which could lead to request smuggling or cache poisoning.\n\nThis flaw was corrected in commit fda3317ec822678564d641e7cf1c9b77ee3759ff by ensuring that the downstream request body is always drained before a connection can be reused.\n\nSee [the blog post](https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora/) for more information.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "pingora-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.5.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-4366"
  }, {
    "type" : "WEB",
    "url" : "https://blog.cloudflare.com/resolving-a-request-smuggling-vulnerability-in-pingora"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/cloudflare/pingora"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2025-0037.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-444" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-05-22T20:25:15Z",
    "nvd_published_at" : "2025-05-22T16:15:55Z"
  }
}