GHSA-m9p2-fxp5-v3fp: Diesel Command Injection Vulnerability

MODERATE
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CWE-88
Published
Advisory Summary

GHSA-m9p2-fxp5-v3fp is a MODERATE command injection vulnerability (CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')) affecting Diesel libraries in the crates.io ecosystem. The issue involves command injection in diesel's implementation of `copy from`/`copy to`. Remediation is available by upgrading affected packages to version 2.3.8.

GHSA-m9p2-fxp5-v3fp at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-m9p2-fxp5-v3fp
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
Affected Product Diesel
Package Ecosystem crates.io
Published Date
Last Updated

How to Fix GHSA-m9p2-fxp5-v3fp

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

diesel fixed: 2.3.8 
Upgrade diesel to 2.3.8
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 diesel

How to Check if You Are Affected

To determine whether your application is affected by GHSA-m9p2-fxp5-v3fp, inspect your project dependencies for Diesel:

inspect dependencies for diesel

Analyze the terminal output to locate any version of Diesel in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.8), 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-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection'), where the product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string. In Diesel, 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

Diesel allows users to configure various options for PostgreSQL's `COPY FROM` and `COPY TO` statements. These configurations are partially provided as strings or characters. Diesel did not check if any these user-provided options contain a quote character `'`, which can lead to the injection of additional options in the current `COPY FROM`/`COPY TO` statement. This vulnerability affects any user of `COPY FROM`/`COPY TO` that passes user-provided input to any of the affected functions. It can result in modifications of options in the current statement, but it is not possible inject additional statements. ## Mitigation The preferred mitigation to the outlined problem is to update to Diesel version 2.3.8 or newer, which includes fixes for the problem. ## Resolution Diesel now correctly escapes any quotes contained in the provided arguments.

GHSA-m9p2-fxp5-v3fp Affected Diesel Versions

1 component(s)
Fixed Versions:
2.3.8
Product / Package Ecosystem Affected Versions Fixed Version
diesel
 crates.io
< 2.3.8
2.3.8

References

Diesel Source Repository REPOSITORY
https://github.com/diesel-rs/diesel/pull/5042
Diesel Source Repository REPOSITORY
https://github.com/diesel-rs/diesel
rustsec.org/advisories/rustsec-... WEB
https://rustsec.org/advisories/RUSTSEC-2026-0136.html

Frequently Asked Questions

What is GHSA-m9p2-fxp5-v3fp?
GHSA-m9p2-fxp5-v3fp is a security vulnerability in Diesel involving Command injection in Diesel's implementation of `COPY FROM`/`COPY TO` under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection').
Which Diesel versions are affected?
Affected versions include releases prior to 2.3.8 across affected packages: diesel.
What version fixes GHSA-m9p2-fxp5-v3fp?
Upgrading to 2.3.8 (or the latest patched release for your respective branch) resolves the vulnerability.
Is diesel affected?
Yes, diesel is affected in releases prior to 2.3.8. Upgrade your dependency to 2.3.8 or later.
What CWE is associated with GHSA-m9p2-fxp5-v3fp?
GHSA-m9p2-fxp5-v3fp is classified under CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection') (The product constructs a string for a command to be executed by a separate component in another control sphere, but it does not properly delimit the intended arguments, options, or switches within that command string.).
How can I check crates.io dependencies for GHSA-m9p2-fxp5-v3fp?
Run the dependency tree command: 'inspect dependencies for diesel'. 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-m9p2-fxp5-v3fp",
  "modified" : "2026-05-19T19:42:00Z",
  "published" : "2026-05-19T19:42:00Z",
  "aliases" : [ ],
  "summary" : "Diesel: Command injection in Diesel's implementation of `COPY FROM`/`COPY TO`",
  "details" : "Diesel allows users to configure various options for PostgreSQL's `COPY FROM` and `COPY TO` statements. These configurations are partially provided as strings or characters. \n\nDiesel did not check if any these user-provided options contain a quote character `'`, which can lead to the injection of additional options in the current `COPY FROM`/`COPY TO` statement. \n\nThis vulnerability affects any user of `COPY FROM`/`COPY TO` that passes user-provided input to any of the affected functions. It can result in modifications of options in the current statement, but it is not possible inject additional statements.\n\n## Mitigation\n\nThe preferred mitigation to the outlined problem is to update to Diesel version 2.3.8 or newer, which includes fixes for the problem.\n\n## Resolution\n\nDiesel now correctly escapes any quotes contained in the provided arguments.",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "crates.io",
      "name" : "diesel"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/diesel-rs/diesel/pull/5042"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/diesel-rs/diesel"
  }, {
    "type" : "WEB",
    "url" : "https://rustsec.org/advisories/RUSTSEC-2026-0136.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-88" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-05-19T19:42:00Z",
    "nvd_published_at" : null
  }
}