Vulnerability-Lookup

GHSA-C937-9CCF-7MQ9

Vulnerability from github – Published: 2026-08-26 18:31 – Updated: 2026-08-26 18:31

Details

NebulaGraph exposes its runtime configuration over an unauthenticated HTTP service. Each daemon starts the web service defined in src/webservice/WebService.cpp, whose bind address defaults to all interfaces, and registers routes for reading and writing gflags alongside status and statistics. Neither the service nor its router carries any authentication, token check or address restriction. The read route returns the daemon's full set of runtime flag values, which includes the configured certificate, key and certificate-authority paths, the password file path, data directories and the transport-security enable flags. The write route parses a supplied map and applies each entry through the gflags runtime setter, so a caller able to reach the port can change the daemon's behaviour without restarting it, including disabling the transport-security flags, redirecting log files and altering flags such as failed_login_attempts and password_lock_time_in_secs. Public reports of this endpoint describe a single name, enable_authorize, being refused by the handler; at release 3.8.0 that refusal is not present and the handler applies every name it is given.

Severity

9.8 (Critical)


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

9.3 (Critical)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-81032"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-26T16:16:46Z",
    "severity": "CRITICAL"
  },
  "details": "NebulaGraph exposes its runtime configuration over an unauthenticated HTTP service. Each daemon starts the web service defined in src/webservice/WebService.cpp, whose bind address defaults to all interfaces, and registers routes for reading and writing gflags alongside status and statistics. Neither the service nor its router carries any authentication, token check or address restriction. The read route returns the daemon\u0027s full set of runtime flag values, which includes the configured certificate, key and certificate-authority paths, the password file path, data directories and the transport-security enable flags. The write route parses a supplied map and applies each entry through the gflags runtime setter, so a caller able to reach the port can change the daemon\u0027s behaviour without restarting it, including disabling the transport-security flags, redirecting log files and altering flags such as failed_login_attempts and password_lock_time_in_secs. Public reports of this endpoint describe a single name, enable_authorize, being refused by the handler; at release 3.8.0 that refusal is not present and the handler applies every name it is given.",
  "id": "GHSA-c937-9ccf-7mq9",
  "modified": "2026-08-26T18:31:56Z",
  "published": "2026-08-26T18:31:56Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-81032"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vesoft-inc/nebula/issues/6157"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vesoft-inc/nebula"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vesoft-inc/nebula/blob/v3.8.0/src/webservice/SetFlagsHandler.cpp"
    },
    {
      "type": "WEB",
      "url": "https://github.com/vesoft-inc/nebula/blob/v3.8.0/src/webservice/WebService.cpp"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/nebulagraph-through-3.8.0-unauthenticated-read-and-modification-of-runtime-configuration"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/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-2026-81032 (GCVE-0-2026-81032)

Vulnerability from cvelistv5 – Published: 2026-08-26 15:45 – Updated: 2026-08-26 17:10

Title

NebulaGraph through 3.8.0 Unauthenticated Read and Modification of Runtime Configuration

Summary

Severity

9.3 (Critical)


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

9.8 (Critical)


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

SSVC

Exploitation: poc Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-26 17:09 UTC

CWE

CWE-306 - Missing Authentication for Critical Function

Assigner

VulnCheck mitre root

References

5 references

URL	Tags
https://github.com/vesoft-inc/nebula	product
https://github.com/vesoft-inc/nebula/issues/6157	issue-tracking
https://github.com/vesoft-inc/nebula/blob/v3.8.0/…	technical-description
https://github.com/vesoft-inc/nebula/blob/v3.8.0/…	technical-description
https://www.vulncheck.com/advisories/nebulagraph-…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
vesoft-inc	nebula	Affected: 0 , ≤ 3.8.0 (semver)

Date Public

2026-08-26 00:00

Credits

George Chen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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                "id": "CVE-2026-81032",
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                  },
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-26T17:09:35.214882Z",
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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-C937-9CCF-7MQ9

CVE-2026-81032 (GCVE-0-2026-81032)

Tags

Sightings

Nomenclature