{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-29T08:33:53.944","vulnerabilities":[{"cve":{"id":"CVE-2026-3256","sourceIdentifier":"9b29abf9-4ab0-4765-b253-1875cd9b441e","published":"2026-03-28T19:16:56.570","lastModified":"2026-06-29T07:16:25.093","vulnStatus":"Modified","cveTags":[],"descriptions":[{"lang":"en","value":"HTTP::Session versions before 0.54 for Perl defaults to using insecurely generated session ids.\n\nHTTP::Session defaults to using HTTP::Session::ID::SHA1 to generate session ids using a SHA-1 hash seeded with the built-in rand function, the high resolution epoch time, and the PID. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.\n\nThe distribution includes HTTP::session::ID::MD5 which contains a similar flaw, but uses the MD5 hash instead."},{"lang":"es","value":"Las versiones de HTTP::Session hasta la 0.53 para Perl por defecto utilizan identificadores de sesión generados de forma insegura.\n\nHTTP::Session por defecto utiliza HTTP::Session::ID::SHA1 para generar identificadores de sesión usando un hash SHA-1 sembrado con la función rand incorporada, el tiempo de época de alta resolución y el PID. El PID provendrá de un pequeño conjunto de números, y el tiempo de época puede ser adivinado, si no se filtra del encabezado HTTP Date. La función rand incorporada es inadecuada para uso criptográfico.\n\nLa distribución incluye HTTP::session::ID::MD5 que contiene una falla similar, pero utiliza el hash MD5 en su lugar."}],"affected":[{"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e","affectedData":[{"vendor":"KTAT","product":"HTTP::Session","defaultStatus":"unaffected","collectionURL":"https://cpan.org/modules","packageName":"http-session","programRoutines":[{"name":"HTTP::Session::ID::SHA1::generate_id"},{"name":"HTTP::Session::ID::MD5::generate_id"}],"repo":"https://github.com/tokuhirom/http-session","versions":[{"version":"0","lessThan":"0.54","versionType":"custom","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9},{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","type":"Secondary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","baseScore":9.8,"baseSeverity":"CRITICAL","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":5.9}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-04-01T14:14:27.526725Z","id":"CVE-2026-3256","options":[{"exploitation":"none"},{"automatable":"yes"},{"technicalImpact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e","type":"Secondary","description":[{"lang":"en","value":"CWE-338"},{"lang":"en","value":"CWE-340"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:ktat:http\\:\\:session:*:*:*:*:*:perl:*:*","versionEndIncluding":"0.53","matchCriteriaId":"DADAF64A-EA4A-4FB2-9988-17FF1D875219"}]}]}],"references":[{"url":"https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/ID/MD5.pm","source":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":["Product"]},{"url":"https://metacpan.org/release/KTAT/http-session-0.53/source/lib/HTTP/Session/ID/SHA1.pm","source":"9b29abf9-4ab0-4765-b253-1875cd9b441e","tags":["Product"]},{"url":"https://metacpan.org/release/TOKUHIROM/http-session-0.54/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","tags":["Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/03/28/5","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"]}]}}]}