Vulnerability-Lookup

CVE-2026-104150 (GCVE-0-2026-104150)

Vulnerability from cvelistv5 – Published: 2026-10-15 18:42 – Updated: 2026-10-15 19:52

Title

AdonisJS HTTP Server: Uncontrolled Resource Consumption and Inefficient Regular Expression Complexity

Summary

AdonisJS HTTP Server is a package for handling HTTP requests in the AdonisJS framework. Prior to 8.2.2 and 9.1.1, the regular expression returned by router.matchers.slug() contains adjacent greedy repetitions with overlapping character classes. When an application applies this matcher to an attacker-controlled route parameter, a long slug ending in a character rejected by the final assertion causes quadratic backtracking and excessive CPU use. Route matching occurs before route and group middleware, so authentication or rate-limiting middleware attached to the route may not prevent an unauthenticated request from blocking the Node.js event loop and stopping the worker from serving unrelated requests or health checks. This issue is fixed in versions 8.2.2 and 9.1.1.

Severity

8.7 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-15 19:52 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-1333 - Inefficient Regular Expression Complexity

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7735 records in the last 180 days details

References

5 references

URL	Tags
https://github.com/adonisjs/http-server/security/…	x_refsource_CONFIRM
https://github.com/adonisjs/http-server/commit/86…	x_refsource_MISC
https://github.com/adonisjs/http-server/commit/d8…	x_refsource_MISC
https://github.com/adonisjs/http-server/releases/…	x_refsource_MISC
https://github.com/adonisjs/http-server/releases/…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
adonisjs	http-server	Affected: < 8.2.2 Affected: >= 9.0.0, < 9.1.1	guessed

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-104150

Vulnerability from fkie_nvd - Published: 2026-10-15 19:17 - Updated: 2026-10-15 20:17

Severity

8.7 (High) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/adonisjs/http-server/commit/86af38ca861528f673dcac6a4806197de038d1f7
	security-advisories@github.com	https://github.com/adonisjs/http-server/commit/d8c749aa9f66d5d214bad1cad727264aef4be727
	security-advisories@github.com	https://github.com/adonisjs/http-server/releases/tag/v8.2.2
	security-advisories@github.com	https://github.com/adonisjs/http-server/releases/tag/v9.1.1
	security-advisories@github.com	https://github.com/adonisjs/http-server/security/advisories/GHSA-524c-h47v-m3h8

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
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          "product": "http-server",
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    }
  ],
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  "lastModified": "2026-10-15T20:17:06.013",
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          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-104150",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-15T19:52:15.785825Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-15T19:17:14.603",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/adonisjs/http-server/commit/86af38ca861528f673dcac6a4806197de038d1f7"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/adonisjs/http-server/commit/d8c749aa9f66d5d214bad1cad727264aef4be727"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/adonisjs/http-server/releases/tag/v8.2.2"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/adonisjs/http-server/releases/tag/v9.1.1"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/adonisjs/http-server/security/advisories/GHSA-524c-h47v-m3h8"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Received",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        },
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}

GHSA-524C-H47V-M3H8

Vulnerability from github – Published: 2026-10-15 20:09 – Updated: 2026-10-15 20:09

Summary

AdonisJS HTTP Server: Uncontrolled Resource Consumption and Inefficient Regular Expression Complexity

Details

Description

A Regular Expression Denial of Service vulnerability in the built-in AdonisJS slug route matcher may allow a remote attacker to block the Node.js event loop using a specially crafted URL.

This affects applications using router.matchers.slug() on a route parameter reachable by an attacker.

Details

The regular expression used by router.matchers.slug() contains adjacent greedy quantifiers with overlapping character classes:

/^[^\s-_](?!.*?[-_]{2,})([a-z0-9-\\]{1,})[^\s]*[^-_\s]$/

When the matcher receives a long string ending with a character rejected by the final assertion, the regular expression engine must evaluate many possible ways of dividing the input between the overlapping quantifiers before determining that it does not match.

This results in quadratic execution time. Testing measured an approximate complexity of O(n^1.98).

Route matchers are evaluated against attacker-controlled URL segments during routing. Therefore, an unauthenticated attacker can trigger the vulnerable expression by sending a request to a route configured as follows:

router
  .get('/posts/:slug', handler)
  .where('slug', router.matchers.slug())

Routing occurs before route and group middleware. As a result, authentication or rate-limiting middleware attached to the affected route may not prevent exploitation.

The vulnerability is limited to routes that explicitly use the built-in slug matcher.

Impact

Exploitation requires an application to expose a route using router.matchers.slug() with an attacker-controlled parameter.

A specially crafted request can cause excessive CPU consumption and block the Node.js event loop. While the expression is being evaluated, the process cannot serve other requests, including requests to unrelated routes or health-check endpoints.

Only a small number of requests may be required to consume the capacity of a worker. Reverse-proxy request-line limits reduce the maximum processing time of an individual request but do not fully mitigate the vulnerability.

Patches

Fixes targeting v6 and v7 have been published below.

Users should upgrade to a version that includes the following fix:

https://github.com/adonisjs/http-server/releases/tag/v9.1.1
https://github.com/adonisjs/http-server/releases/tag/v8.2.2

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@adonisjs/http-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "9.0.0"
            },
            {
              "fixed": "9.1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 8.2.1"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@adonisjs/http-server"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "8.2.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-104150"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333",
      "CWE-400"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-15T20:09:52Z",
    "nvd_published_at": null,
    "severity": "MODERATE"
  },
  "details": "### Description\n\nA Regular Expression Denial of Service vulnerability in the built-in AdonisJS slug route matcher may allow a remote attacker to block the Node.js event loop using a specially crafted URL.\n\nThis affects applications using `router.matchers.slug()` on a route parameter reachable by an attacker.\n\n### Details\n\nThe regular expression used by `router.matchers.slug()` contains adjacent greedy quantifiers with overlapping character classes:\n\n```regex\n/^[^\\s-_](?!.*?[-_]{2,})([a-z0-9-\\\\]{1,})[^\\s]*[^-_\\s]$/\n```\n\nWhen the matcher receives a long string ending with a character rejected by the final assertion, the regular expression engine must evaluate many possible ways of dividing the input between the overlapping quantifiers before determining that it does not match.\n\nThis results in quadratic execution time. Testing measured an approximate complexity of `O(n^1.98)`.\n\nRoute matchers are evaluated against attacker-controlled URL segments during routing. Therefore, an unauthenticated attacker can trigger the vulnerable expression by sending a request to a route configured as follows:\n\n```ts\nrouter\n  .get(\u0027/posts/:slug\u0027, handler)\n  .where(\u0027slug\u0027, router.matchers.slug())\n```\n\nRouting occurs before route and group middleware. As a result, authentication or rate-limiting middleware attached to the affected route may not prevent exploitation.\n\nThe vulnerability is limited to routes that explicitly use the built-in slug matcher.\n\n### Impact\n\nExploitation requires an application to expose a route using `router.matchers.slug()` with an attacker-controlled parameter.\n\nA specially crafted request can cause excessive CPU consumption and block the Node.js event loop. While the expression is being evaluated, the process cannot serve other requests, including requests to unrelated routes or health-check endpoints.\n\nOnly a small number of requests may be required to consume the capacity of a worker. Reverse-proxy request-line limits reduce the maximum processing time of an individual request but do not fully mitigate the vulnerability.\n\n### Patches\n\nFixes targeting v6 and v7 have been published below.\n\nUsers should upgrade to a version that includes the following fix:\n\n- https://github.com/adonisjs/http-server/releases/tag/v9.1.1\n- https://github.com/adonisjs/http-server/releases/tag/v8.2.2",
  "id": "GHSA-524c-h47v-m3h8",
  "modified": "2026-10-15T20:09:52Z",
  "published": "2026-10-15T20:09:52Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/http-server/security/advisories/GHSA-524c-h47v-m3h8"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/http-server/commit/86af38ca861528f673dcac6a4806197de038d1f7"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/http-server/commit/d8c749aa9f66d5d214bad1cad727264aef4be727"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/adonisjs/http-server"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/http-server/releases/tag/v8.2.2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/adonisjs/http-server/releases/tag/v9.1.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [],
  "summary": "AdonisJS HTTP Server: Uncontrolled Resource Consumption and Inefficient Regular Expression Complexity"
}

Sightings

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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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CVE-2026-104150 (GCVE-0-2026-104150)

FKIE_CVE-2026-104150

GHSA-524C-H47V-M3H8

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