Vulnerability-Lookup

GHSA-G743-M6X3-V6WM

Vulnerability from github – Published: 2026-06-15 21:30 – Updated: 2026-08-26 15:03

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

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/andreimarcu/linx-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "2.3.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-50879"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-08-26T15:03:07Z",
    "nvd_published_at": "2026-06-15T20:16:30Z",
    "severity": "HIGH"
  },
  "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.",
  "id": "GHSA-g743-m6x3-v6wm",
  "modified": "2026-08-26T15:03:07Z",
  "published": "2026-06-15T21:30:41Z",
  "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"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "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"
}

CVE-2026-50879 (GCVE-0-2026-50879)

Vulnerability from cvelistv5 – Published: 2026-06-15 00:00 – Updated: 2026-06-16 13:02

Summary

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

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-06-16 13:02 UTC

CWE

n/a
CWE-400 - Uncontrolled Resource Consumption

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2333 records in the last 180 days details

References

1 reference

URL	Tags
https://gist.github.com/pyuysig/807d92e6d8e7648d1…

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "NONE",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-50879",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-16T13:02:29.446861Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-400",
                "description": "CWE-400 Uncontrolled Resource Consumption",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-16T13:02:33.138Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://gist.github.com/pyuysig/807d92e6d8e7648d140d004f3b54b08b"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-15T18:52:57.603Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://gist.github.com/pyuysig/807d92e6d8e7648d140d004f3b54b08b"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2026-50879",
    "datePublished": "2026-06-15T00:00:00.000Z",
    "dateReserved": "2026-06-07T00:00:00.000Z",
    "dateUpdated": "2026-06-16T13:02:33.138Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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