Vulnerability-Lookup

CVE-2026-116285 (GCVE-0-2026-116285)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:16 – Updated: 2026-10-28 17:16

Title

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies

Summary

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies. In chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\da-fA-F]+).*\x0D\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line's length. Nothing limits how long the line can be. A remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body.

Severity

No CVSS data available.

CWE

CWE-1333 - Inefficient Regular Expression Complexity

Assigner

CPANSec CNA under the redhat root

CNA scorecard C 62/100 over 337 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/libwww-perl/HTTP-Body/commit/9…	patch
https://metacpan.org/release/GETTY/HTTP-Body-1.24…	release-notes

Impacted products

1 product

Vendor	Product	Version	CPE status
		Affected: 0 , < 1.23_01 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "HTTP::Body"
          ],
          "packageName": "HTTP-Body",
          "packageURL": "pkg:cpan/HTTP-Body",
          "programFiles": [
            "lib/HTTP/Body.pm"
          ],
          "programRoutines": [
            {
              "name": "HTTP::Body::add"
            }
          ],
          "repo": "https://github.com/libwww-perl/HTTP-Body",
          "versions": [
            {
              "lessThan": "1.23_01",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.\n\nIn chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\\da-fA-F]+).*\\x0D\\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line\u0027s length. Nothing limits how long the line can be.\n\nA remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-1333",
              "description": "CWE-1333 Inefficient Regular Expression Complexity",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T17:16:16.997Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to HTTP-Body 1.23_01 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-116285",
    "datePublished": "2026-10-28T17:16:16.997Z",
    "dateReserved": "2026-10-25T23:54:54.524Z",
    "dateUpdated": "2026-10-28T17:16:16.997Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-116285",
      "date": "2026-10-30",
      "epss": "0.00288",
      "percentile": "0.21431"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "collectionURL": "https://cpan.org/modules",
                "defaultStatus": "unaffected",
                "modules": [
                  "HTTP::Body"
                ],
                "packageName": "HTTP-Body",
                "packageURL": "pkg:cpan/HTTP-Body",
                "programFiles": [
                  "lib/HTTP/Body.pm"
                ],
                "programRoutines": [
                  {
                    "name": "HTTP::Body::add"
                  }
                ],
                "repo": "https://github.com/libwww-perl/HTTP-Body",
                "versions": [
                  {
                    "lessThan": "1.23_01",
                    "status": "affected",
                    "version": "0",
                    "versionType": "custom"
                  }
                ]
              }
            ],
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.\n\nIn chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\\da-fA-F]+).*\\x0D\\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line\u0027s length. Nothing limits how long the line can be.\n\nA remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body."
          }
        ],
        "id": "CVE-2026-116285",
        "lastModified": "2026-10-29T15:11:53.000",
        "metrics": {},
        "published": "2026-10-28T18:17:13.903",
        "references": [
          {
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
            "url": "https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch"
          },
          {
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
            "url": "https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"
          }
        ],
        "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-1333"
              }
            ],
            "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
            "type": "Secondary"
          }
        ]
      }
    },
    "redhat_vex": {
      "current_release_date": "2026-10-30T15:04:27+00:00",
      "cve": "CVE-2026-116285",
      "id": "CVE-2026-116285",
      "initial_release_date": "2026-10-28T17:16:16.997000+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "perl-http-body: HTTP::Body: Denial of Service via quadratic regular expression backtracking",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-116285.json",
      "version": "3"
    }
  }
}

FKIE_CVE-2026-116285

Vulnerability from fkie_nvd - Published: 2026-10-28 18:17 - Updated: 2026-10-29 15:11

Severity

Summary

References

	URL	Tags
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch
	9b29abf9-4ab0-4765-b253-1875cd9b441e	https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "HTTP::Body"
          ],
          "packageName": "HTTP-Body",
          "packageURL": "pkg:cpan/HTTP-Body",
          "programFiles": [
            "lib/HTTP/Body.pm"
          ],
          "programRoutines": [
            {
              "name": "HTTP::Body::add"
            }
          ],
          "repo": "https://github.com/libwww-perl/HTTP-Body",
          "versions": [
            {
              "lessThan": "1.23_01",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.\n\nIn chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\\da-fA-F]+).*\\x0D\\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line\u0027s length. Nothing limits how long the line can be.\n\nA remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body."
    }
  ],
  "id": "CVE-2026-116285",
  "lastModified": "2026-10-29T15:11:53.000",
  "metrics": {},
  "published": "2026-10-28T18:17:13.903",
  "references": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch"
    },
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "url": "https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"
    }
  ],
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-1333"
        }
      ],
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary"
    }
  ]
}

GHSA-Q6FP-395R-83JV

Vulnerability from github – Published: 2026-10-28 18:32 – Updated: 2026-10-28 18:32

Details

HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.

In chunked mode, used when no content length is given, add() matches each chunk-size line with /^([\da-fA-F]+).*\x0D\x0A/. On a line of hex digits whose first LF has no CR before it, the digits and .* backtrack against each other, so a single add() takes time quadratic in the line's length. Nothing limits how long the line can be.

A remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body.

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-116285"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-1333"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-28T18:17:13Z",
    "severity": null
  },
  "details": "HTTP::Body versions before 1.23_01 for Perl allow CPU exhaustion via quadratic regex backtracking when parsing chunked request bodies.\n\nIn chunked mode, used when no content length is given, add() matches each chunk-size line with `/^([\\da-fA-F]+).*\\x0D\\x0A/`. On a line of hex digits whose first LF has no CR before it, the digits and `.*` backtrack against each other, so a single add() takes time quadratic in the line\u0027s length. Nothing limits how long the line can be.\n\nA remote attacker can exhaust CPU in applications that pass chunked request bodies to HTTP::Body.",
  "id": "GHSA-q6fp-395r-83jv",
  "modified": "2026-10-28T18:32:13Z",
  "published": "2026-10-28T18:32:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116285"
    },
    {
      "type": "WEB",
      "url": "https://github.com/libwww-perl/HTTP-Body/commit/954a5343d2a095b59d357f28759c5388d1169574.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/GETTY/HTTP-Body-1.24/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

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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Action not permitted

CVE-2026-116285 (GCVE-0-2026-116285)

FKIE_CVE-2026-116285

GHSA-Q6FP-395R-83JV

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