Vulnerability-Lookup

GHSA-QFWM-769M-74FG

Vulnerability from github – Published: 2026-10-26 18:33 – Updated: 2026-10-26 18:33

Details

Routinator runs out of open connections on the HTTP server when many connections are opened but never closed, leaving the HTTP server unavailable. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server.

This only affects users that make their HTTP or RTR server available to untrusted networks.

Severity

5.3 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-72757"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-755"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-26T18:18:42Z",
    "severity": "MODERATE"
  },
  "details": "Routinator runs out of open connections on the HTTP server when many connections are opened but never closed, leaving the HTTP server unavailable. This condition can be triggered maliciously by an attacker by opening a large number of connections to the HTTP server.\n\nThis only affects users that make their HTTP or RTR server available to untrusted networks.",
  "id": "GHSA-qfwm-769m-74fg",
  "modified": "2026-10-26T18:33:03Z",
  "published": "2026-10-26T18:33:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72757"
    },
    {
      "type": "WEB",
      "url": "https://www.nlnetlabs.nl/downloads/routinator/CVE-2026-72756.txt"
    }
  ],
  "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:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-72757 (GCVE-0-2026-72757)

Vulnerability from cvelistv5 – Published: 2026-10-26 17:07 – Updated: 2026-10-26 17:57

Title

Routinator HTTP server becomes unavailable with many unclosed connections

Summary

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-26 17:46 UTC

CWE

CWE-755 - Improper Handling of Exceptional Conditions

Assigner

NLnet Labs CNA

CNA scorecard B 82/100 over 73 records in the last 180 days details

References

1 reference

URL	Tags
https://www.nlnetlabs.nl/downloads/routinator/CVE…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
NLnet Labs	Routinator	Unaffected: 0.15.3 , < * (semver)

Date Public

2026-10-26 00:00

Credits

Qifan Zhang, Palo Alto Networks

Show details on NVD website

JSON

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  "containers": {
    "adp": [
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        "metrics": [
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                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-26T17:46:37.033179Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-10-26T17:57:33.452Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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        "title": "CISA ADP Vulnrichment"
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    ],
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          "product": "Routinator",
          "vendor": "NLnet Labs",
          "versions": [
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        }
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            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
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          "lang": "en",
          "time": "2026-06-21T00:00:00.000Z",
          "value": "Issue reported"
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          "time": "2026-10-26T00:00:00.000Z",
          "value": "Fixes released"
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    "dateReserved": "2026-08-10T14:08:41.336Z",
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    "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.
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