Vulnerability-Lookup

GHSA-XFC8-R6H3-QMMM

Vulnerability from github – Published: 2026-10-30 15:34 – Updated: 2026-10-30 15:34

Details

Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory.

The request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called.

A remote attacker can force a worker restart with each request of a few bytes.

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-115865"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-789"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-10-30T13:18:30Z",
    "severity": null
  },
  "details": "Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory.\n\nThe request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called.\n\nA remote attacker can force a worker restart with each request of a few bytes.",
  "id": "GHSA-xfc8-r6h3-qmmm",
  "modified": "2026-10-30T15:34:30Z",
  "published": "2026-10-30T15:34:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-115865"
    },
    {
      "type": "WEB",
      "url": "https://github.com/kazuho/Starlet/commit/598947ac620fd31b390335c683d79fa244770782.patch"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/KAZUHO/Starlet-0.33/changes"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-115865 (GCVE-0-2026-115865)

Vulnerability from cvelistv5 – Published: 2026-10-30 12:44 – Updated: 2026-10-30 12:44

Title

Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory

Summary

Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory. The request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called. A remote attacker can force a worker restart with each request of a few bytes.

Severity

No CVSS data available.

CWE

CWE-789 - Memory Allocation with Excessive Size Value

Assigner

CPANSec CNA under the redhat root

CNA scorecard C 62/100 over 343 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/kazuho/Starlet/commit/598947ac…	patch
https://metacpan.org/release/KAZUHO/Starlet-0.33/…	release-notes

Impacted products

1 product

Vendor	Product	Version
		Affected: 0 , < 0.33 (custom)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "collectionURL": "https://cpan.org/modules",
          "defaultStatus": "unaffected",
          "modules": [
            "Starlet"
          ],
          "packageName": "Starlet",
          "packageURL": "pkg:cpan/Starlet",
          "programFiles": [
            "lib/Starlet/Server.pm"
          ],
          "programRoutines": [
            {
              "name": "Starlet::Server::handle_connection"
            }
          ],
          "repo": "https://github.com/kazuho/Starlet",
          "versions": [
            {
              "lessThan": "0.33",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory.\n\nThe request body is read in a loop that asks sysread for all of the remaining declared length at once. Perl grows the read buffer to that size before any data arrives, so a length larger than available memory makes the worker exit with an uncatchable out of memory error before the application is called.\n\nA remote attacker can force a worker restart with each request of a few bytes."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-789",
              "description": "CWE-789 Memory Allocation with Excessive Size Value",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:44:06.034Z",
        "orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
        "shortName": "CPANSec"
      },
      "references": [
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/kazuho/Starlet/commit/598947ac620fd31b390335c683d79fa244770782.patch"
        },
        {
          "tags": [
            "release-notes"
          ],
          "url": "https://metacpan.org/release/KAZUHO/Starlet-0.33/changes"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "value": "Upgrade to Starlet 0.33 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "Starlet versions before 0.33 for Perl allow a request declaring a large Content-Length to kill a worker by exhausting memory",
      "x_generator": {
        "engine": "cpansec-cna-tool 0.1"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
    "assignerShortName": "CPANSec",
    "cveId": "CVE-2026-115865",
    "datePublished": "2026-10-30T12:44:06.034Z",
    "dateReserved": "2026-10-23T17:37:33.627Z",
    "dateUpdated": "2026-10-30T12:44:06.034Z",
    "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.

Vulnerability timeline

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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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