CVE-2026-18536

{"id": "CVE-2026-18536", "cveTags": [], "metrics": {}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://github.com/robrwo/Data-Entropy", "vendor": "RRWO", "product": "Data::Entropy", "versions": [{"status": "affected", "version": "0", "lessThan": "0.010", "versionType": "custom"}], "packageName": "Data-Entropy", "programFiles": ["lib/Data/Entropy/RawSource/RandomOrg.pm", "lib/Data/Entropy/RawSource/RandomnumbersInfo.pm"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "Data::Entropy::RawSource::RandomOrg::_checkbuf"}, {"name": "Data::Entropy::RawSource::RandomOrg::_ensure_buffer"}, {"name": "Data::Entropy::RawSource::RandomnumbersInfo::_ensure_buffer"}]}]}], "published": "2026-08-01T11:16:38.483", "references": [{"url": "https://github.com/robrwo/Data-Entropy/security/advisories/GHSA-845w-rcqw-jwvv", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://metacpan.org/release/RRWO/Data-Entropy-0.008/view/lib/Data/Entropy.pm#STATUS", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://metacpan.org/release/RRWO/Data-Entropy-0.010/changes", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://security.metacpan.org/docs/guides/random-data-for-security.html", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "http://www.openwall.com/lists/oss-security/2026/08/01/8", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Received", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-319"}, {"lang": "en", "value": "CWE-353"}]}], "descriptions": [{"lang": "en", "value": "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."}], "lastModified": "2026-08-01T16:16:30.907", "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}