CVE-2026-65059

Full vulnerability record from the local CVENow database.

Description

Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression of HTTP responses. Furl inflates a response body sent with a gzip, x-gzip or deflate Content-Encoding and appends the output to the response string with no size limit. It does this whether or not the request asked for compression, and no option caps the decompressed size. Responses read with write_file or write_code are streamed rather than held in memory. A malicious server, or an attacker on a plain HTTP connection, can send a small compressed response that expands to exhaust the client's memory and end the process.

Severity

Not scored

CVSS score

Not available

Vulnerability status

Received

Source identifier

9b29abf9-4ab0-4765-b253-1875cd9b441e

Published

2026-11-02 17:17:44.803000

Last modified

2026-11-02 17:17:44.803000

View original CVE JSON

{
  "id": "CVE-2026-65059",
  "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
  "published": "2026-11-02T17:17:44.803",
  "lastModified": "2026-11-02T17:17:44.803",
  "vulnStatus": "Received",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Furl versions through 3.15 for Perl allow memory exhaustion via unbounded decompression of HTTP responses.\n\nFurl inflates a response body sent with a gzip, x-gzip or deflate Content-Encoding and appends the output to the response string with no size limit. It does this whether or not the request asked for compression, and no option caps the decompressed size. Responses read with write_file or write_code are streamed rather than held in memory.\n\nA malicious server, or an attacker on a plain HTTP connection, can send a small compressed response that expands to exhaust the client's memory and end the process."
    }
  ],
  "affected": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "collectionURL": "https://cpan.org/modules",
          "packageName": "Furl",
          "modules": [
            "Furl"
          ],
          "programFiles": [
            "lib/Furl/HTTP.pm",
            "lib/Furl/ZlibStream.pm"
          ],
          "programRoutines": [
            {
              "name": "Furl::HTTP::request"
            },
            {
              "name": "Furl::ZlibStream::append"
            }
          ],
          "repo": "https://github.com/tokuhirom/Furl",
          "packageURL": "pkg:cpan/Furl",
          "versions": [
            {
              "version": "0",
              "lessThanOrEqual": "3.15",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {},
  "weaknesses": [
    {
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-409"
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/tokuhirom/Furl/pull/139",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    },
    {
      "url": "https://metacpan.org/release/SYOHEX/Furl-3.15/source/lib/Furl/ZlibStream.pm",
      "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
    }
  ]
}