{"id":"CVE-2026-18536","summary":"Data::Entropy versions before 0.010 for Perl read remote entropy sources over plain HTTP","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.","aliases":["GHSA-845w-rcqw-jwvv"],"modified":"2026-08-03T03:45:36.091371674Z","published":"2026-08-01T10:35:38.392Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/18xxx/CVE-2026-18536.json","cna_assigner":"CPANSec","cwe_ids":["CWE-319","CWE-353"]},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/robrwo/data-entropy","events":[{"introduced":"0"},{"fixed":"a07c1b739206e29cb0b56ccc0583be3cdabbe202"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"0.010"}],"source":["AFFECTED_FIELD","DESCRIPTION"]}}],"versions":["v0.009","v0.008","v0.007"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-18536.json"}}],"schema_version":"1.7.5"}