GHSA-c8gq-rhqh-wgwm: Duplicate Advisory Denial of Service Vulnerability

HIGH
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CVSS 7.5
CWE-125
Published
Advisory Summary

GHSA-c8gq-rhqh-wgwm is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-125: Out-of-bounds Read) affecting Duplicate Advisory libraries in the NuGet ecosystem. The issue involves .net denial of service vulnerability. Remediation is available in the latest vendor maintenance releases.

GHSA-c8gq-rhqh-wgwm at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-c8gq-rhqh-wgwm
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-125: Out-of-bounds Read
Affected Product Duplicate Advisory
Package Ecosystem NuGet
Published Date
Last Updated

Security Impact

CVSS: 7.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity None (I:N)
Availability High (A:H)

How to Fix GHSA-c8gq-rhqh-wgwm

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.

Microsoft.Bcl.Memory fixed: Latest secure release 
Upgrade Microsoft.Bcl.Memory to Latest secure release
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 Microsoft.Bcl.Memory

How to Check if You Are Affected

To determine whether your application is affected by GHSA-c8gq-rhqh-wgwm, inspect your project dependencies for Duplicate Advisory:

inspect dependencies for Microsoft.Bcl.Memory

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 the patched release), 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-125: Out-of-bounds Read, where the product reads data past the end, or before the beginning, of the intended buffer. 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-73j8-2gch-69rq. This link is maintained to preserve external references. ### Original Description Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.

GHSA-c8gq-rhqh-wgwm Affected Duplicate Advisory Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
Microsoft.Bcl.Memory
nuget/Microsoft.Bcl.Memory
NuGet
≥ 9.0.0
≤ 9.0.13

References

NVD — GHSA-c8gq-rhqh-wgwm NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-26127
msrc.microsoft.com/update-guide/vulner... WEB
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127

Frequently Asked Questions

What is GHSA-c8gq-rhqh-wgwm?
GHSA-c8gq-rhqh-wgwm is a security vulnerability in Duplicate Advisory involving .NET Denial of Service Vulnerability under CWE-125: Out-of-bounds Read.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to current release patches across affected packages: Microsoft.Bcl.Memory.
What version fixes GHSA-c8gq-rhqh-wgwm?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is Microsoft.Bcl.Memory affected?
Yes, Microsoft.Bcl.Memory is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of GHSA-c8gq-rhqh-wgwm?
GHSA-c8gq-rhqh-wgwm has a CVSS v3.1 base score of 7.5 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
What CWE is associated with GHSA-c8gq-rhqh-wgwm?
GHSA-c8gq-rhqh-wgwm is classified under CWE-125: Out-of-bounds Read (The product reads data past the end, or before the beginning, of the intended buffer.).
How can I check NuGet dependencies for GHSA-c8gq-rhqh-wgwm?
Run the dependency tree command: 'inspect dependencies for Microsoft.Bcl.Memory'. 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-c8gq-rhqh-wgwm",
  "modified" : "2026-03-11T19:54:00Z",
  "published" : "2026-03-10T18:31:21Z",
  "withdrawn" : "2026-03-11T19:54:00Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: .NET Denial of Service Vulnerability",
  "details" : "### Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-73j8-2gch-69rq. This link is maintained to preserve external references.\n\n### Original Description\nOut-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "NuGet",
      "name" : "Microsoft.Bcl.Memory"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "9.0.0"
      }, {
        "last_affected" : "9.0.13"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-26127"
  }, {
    "type" : "WEB",
    "url" : "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26127"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-125" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-03-11T19:54:00Z",
    "nvd_published_at" : "2026-03-10T18:18:41Z"
  }
}