Vulnerability-Lookup

GHSA-C8VX-3H2J-4F8M

Vulnerability from github – Published: 2026-09-05 00:31 – Updated: 2026-09-05 00:31

Details

ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.

Severity

7.4 (High)


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

8.3 (High)


                  
                    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-86098"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-787"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-04T23:18:03Z",
    "severity": "HIGH"
  },
  "details": "ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption.",
  "id": "GHSA-c8vx-3h2j-4f8m",
  "modified": "2026-09-05T00:31:06Z",
  "published": "2026-09-05T00:31:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-86098"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2c"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.c"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escape"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-86098 (GCVE-0-2026-86098)

Vulnerability from cvelistv5 – Published: 2026-09-04 22:38 – Updated: 2026-09-04 22:38

Title

ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape

Summary

Severity

8.3 (High)


                        
                          CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N

7.4 (High)


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

CWE

CWE-787 - Out-of-bounds Write

Assigner

VulnCheck mitre root

References

4 references

URL	Tags
https://github.com/ntop/nDPI/commit/94e82c1de1232…	patch
https://github.com/ntop/nDPI	product
https://github.com/ntop/nDPI/blob/5.0/src/lib/ndp…	technical-description
https://www.vulncheck.com/advisories/ntop-ndpi-be…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
ntop	nDPI	Affected: 0 , < 6.0 (custom) Unaffected: 6.0 (custom) cpe:2.3:a:ntop:ndpi::::::::

Date Public

2026-08-25 00:00

Credits

Tristan Madani

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://github.com/ntop/nDPI",
          "defaultStatus": "unaffected",
          "packageURL": "pkg:github/ntop/nDPI",
          "product": "nDPI",
          "repo": "https://github.com/ntop/nDPI",
          "vendor": "ntop",
          "versions": [
            {
              "lessThan": "6.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "status": "unaffected",
              "version": "6.0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:a:ntop:ndpi:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Tristan Madani"
        }
      ],
      "datePublic": "2026-08-25T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "ntop nDPI versions before 6.0 contain a heap buffer overflow vulnerability in the ndpi_json_string_escape function that writes beyond caller-supplied buffer boundaries. Attackers can trigger the overflow by supplying crafted network packet data including TLS SNI, HTTP headers, or DNS names that reach the vulnerable function, causing heap corruption."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 8.3,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "HIGH"
          },
          "format": "CVSS"
        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-787",
              "description": "Out-of-bounds Write",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-04T22:38:48.064Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
      },
      "references": [
        {
          "name": "Patch Commit",
          "tags": [
            "patch"
          ],
          "url": "https://github.com/ntop/nDPI/commit/94e82c1de12323d992895830231865736a8abf2c"
        },
        {
          "tags": [
            "product"
          ],
          "url": "https://github.com/ntop/nDPI"
        },
        {
          "name": "ndpi_json_string_escape() unbounded writes at release 5.0",
          "tags": [
            "technical-description"
          ],
          "url": "https://github.com/ntop/nDPI/blob/5.0/src/lib/ndpi_serializer.c"
        },
        {
          "name": "VulnCheck Advisory: ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/ntop-ndpi-before-6.0-heap-buffer-overflow-via-ndpi-json-string-escape"
        }
      ],
      "title": "ntop nDPI before 6.0 Heap Buffer Overflow via ndpi_json_string_escape",
      "x_generator": {
        "engine": "vulncheck-endgame"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-86098",
    "datePublished": "2026-09-04T22:38:48.064Z",
    "dateReserved": "2026-09-04T22:17:37.991Z",
    "dateUpdated": "2026-09-04T22:38:48.064Z",
    "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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-C8VX-3H2J-4F8M

CVE-2026-86098 (GCVE-0-2026-86098)

Tags

Sightings

Nomenclature