CVE-2026-50879: Github.com/andreimarcu/linx server Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-g743-m6x3-v6wm
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CVSS 7.5
CWE-400
Published
Advisory Summary

CVE-2026-50879 is a HIGH (CVSS 7.5) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Github.com/andreimarcu/linx server libraries in the Go ecosystem. The issue involves linx-server has an issue in the uploadposthandler component that allows attackers to cause a denial of service (dos) via a crafted post request. Remediation is available in the latest vendor maintenance releases.

CVE-2026-50879 at a Glance

CVE Identifier CVE-2026-50879
GHSA Identifier GHSA-g743-m6x3-v6wm
Severity HIGH
CVSS v3.1 Base Score 7.5
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Github.com/andreimarcu/linx server
Package Ecosystem Go
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 CVE-2026-50879

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

github.com/andreimarcu/linx-server fixed: Latest secure release 
Upgrade github.com/andreimarcu/linx-server 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 github.com/andreimarcu/linx-server

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-50879, inspect your project dependencies for Github.com/andreimarcu/linx server:

inspect dependencies for github.com/andreimarcu/linx-server

Analyze the terminal output to locate any version of Github.com/andreimarcu/linx server 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-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Github.com/andreimarcu/linx server, 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

An issue in the uploadPostHandler component of Andrei Marcu linx-server v2.3.8 allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

CVE-2026-50879 Affected Github.com/andreimarcu/linx server Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
github.com/andreimarcu/linx-server
golang/github.com/andreimarcu/linx-server
Go
≤ 2.3.8

References

NVD — CVE-2026-50879 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-50879
Github.com/andreimarcu/linx server Source Repository REPOSITORY
https://gist.github.com/pyuysig/807d92e6d8e7648d140d004f3b54b08b
Github.com/andreimarcu/linx server Source Repository REPOSITORY
https://github.com/andreimarcu/linx-server

Frequently Asked Questions

What is CVE-2026-50879?
CVE-2026-50879 is a security vulnerability in Github.com/andreimarcu/linx server involving linx-server has an issue in the uploadPostHandler component that allows attackers to cause a Denial of Service (DoS) via a crafted POST request under CWE-400: Uncontrolled Resource Consumption.
Which Github.com/andreimarcu/linx server versions are affected?
Affected versions include releases prior to current release patches across affected packages: github.com/andreimarcu/linx-server.
What version fixes CVE-2026-50879?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is github.com/andreimarcu/linx-server affected?
Yes, github.com/andreimarcu/linx-server is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2026-50879?
CVE-2026-50879 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 CVE-2026-50879?
CVE-2026-50879 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check Go dependencies for CVE-2026-50879?
Run the dependency tree command: 'inspect dependencies for github.com/andreimarcu/linx-server'. 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-g743-m6x3-v6wm",
  "modified" : "2026-08-26T15:03:07Z",
  "published" : "2026-06-15T21:30:41Z",
  "aliases" : [ "CVE-2026-50879" ],
  "summary" : "linx-server has an issue in the uploadPostHandler component that allows attackers to cause a Denial of Service (DoS) via a crafted POST request",
  "details" : "An issue in the uploadPostHandler component of Andrei Marcu linx-server v2.3.8 allows attackers to cause a Denial of Service (DoS) via a crafted POST request.",
  "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" : "Go",
      "name" : "github.com/andreimarcu/linx-server"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "2.3.8"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-50879"
  }, {
    "type" : "WEB",
    "url" : "https://gist.github.com/pyuysig/807d92e6d8e7648d140d004f3b54b08b"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/andreimarcu/linx-server"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-08-26T15:03:07Z",
    "nvd_published_at" : "2026-06-15T20:16:30Z"
  }
}