{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.010"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "a07c1b739206e29cb0b56ccc0583be3cdabbe202"
            }
          ],
          "repo": "https://github.com/robrwo/data-entropy",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-845w-rcqw-jwvv"
  ],
  "database_specific": {
    "cna_assigner": "CPANSec",
    "cwe_ids": [
      "CWE-319",
      "CWE-353"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18536.json"
  },
  "details": "Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP.\n\nThe Data::Entropy::RawSource::RandomOrg and Data::Entropy::RawSource::RandomnumbersInfo remote sources are accessed over plain HTTP.\n\nThe Data::Entropy::RawSource::RandomOrg integrity check trivially matches any non-empty byte string.\n\nAny on-path attacker, such as open WiFi, a compromised ISP, captive portal, or a hostile egress proxy substitutes the response and thereby chooses the bytes returned by rand_bits and rand_int for every application that selected one of these sources via with_entropy_source. The _checkbuf method response is equally attacker-controlled, so the retry/sleep behaviour is steerable too.",
  "id": "CVE-2026-18536",
  "modified": "2026-08-04T11:30:50.804316074Z",
  "published": "2026-08-01T10:35:38.392Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/01/8"
    },
    {
      "type": "WEB",
      "url": "https://cpan.org/modules"
    },
    {
      "type": "WEB",
      "url": "https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#STATUS"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18536.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvv"
    },
    {
      "type": "ADVISORY",
      "url": "https://metacpan.org/release/RRWO/Data-Entropy-0.010/changes"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18536"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/robrwo/Data-Entropy"
    },
    {
      "type": "ARTICLE",
      "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
    }
  ],
  "schema_version": "1.8.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP"
}