GHSA-3VR4-CVMG-7FX4

Vulnerability from github – Published: 2026-04-23 00:31 – Updated: 2026-04-30 20:53
VLAI
Summary
copilot-api has Reliance on Reverse DNS Resolution for a Security-Critical Action
Details

A vulnerability was determined in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header Handler. Executing a manipulation of the argument Host can lead to reliance on reverse dns resolution. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Severity
4.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
2.1 (Low)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "copilot-api"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "0.7.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-6874"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-350"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-30T20:53:46Z",
    "nvd_published_at": "2026-04-23T00:16:47Z",
    "severity": "LOW"
  },
  "details": "A vulnerability was determined in ericc-ch copilot-api up to 0.7.0. This impacts an unknown function of the file /token of the component Header Handler. Executing a manipulation of the argument Host can lead to reliance on reverse dns resolution. The attack may be performed from remote. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.",
  "id": "GHSA-3vr4-cvmg-7fx4",
  "modified": "2026-04-30T20:53:46Z",
  "published": "2026-04-23T00:31:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-6874"
    },
    {
      "type": "WEB",
      "url": "https://github.com/August829/CVEP/issues/32"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/ericc-ch/copilot-api"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/submit/795212"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/359039"
    },
    {
      "type": "WEB",
      "url": "https://vuldb.com/vuln/359039/cti"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P",
      "type": "CVSS_V4"
    }
  ],
  "summary": "copilot-api has Reliance on Reverse DNS Resolution for a Security-Critical Action"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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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.