{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-40931", "assignerOrgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "state": "PUBLISHED", "assignerShortName": "CPANSec", "dateReserved": "2025-04-16T09:05:34.363Z", "datePublished": "2026-03-05T01:41:09.588Z", "dateUpdated": "2026-03-05T11:12:52.118Z"}, "containers": {"cna": {"affected": [{"collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "packageName": "Apache-Session", "product": "Apache::Session::Generate::MD5", "programFiles": ["lib/Session/Generate/MD5.pm"], "repo": "https://github.com/chorny/Apache-Session", "vendor": "CHORNY", "versions": [{"lessThanOrEqual": "1.94", "status": "affected", "version": "0", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Robert Rothenberg"}], "descriptions": [{"lang": "en", "value": "Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id.\n\nApache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the 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. Predicable session ids could allow an attacker to gain access to systems."}], "impacts": [{"capecId": "CAPEC-115", "descriptions": [{"lang": "en", "value": "CAPEC-115 Authentication Bypass"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-340", "description": "CWE-340 Generation of Predictable Numbers or Identifiers", "lang": "en", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-338", "description": "CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "shortName": "CPANSec", "dateUpdated": "2026-03-05T01:41:09.588Z"}, "references": [{"url": "https://metacpan.org/dist/Apache-Session/source/lib/Apache/Session/Generate/MD5.pm#L27"}, {"tags": ["technical-description"], "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"}], "solutions": [{"lang": "en", "value": "Consider alternate solutions like https://metacpan.org/pod/Apache::Session::Generate::Random"}], "source": {"discovery": "UNKNOWN"}, "title": "Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id", "x_generator": {"engine": "cpansec-cna-tool 0.1"}}, "adp": [{"title": "CVE Program Container", "references": [{"url": "http://www.openwall.com/lists/oss-security/2026/03/05/3"}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2026-03-05T11:12:52.118Z"}}]}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "Apache::Session::Generate::MD5 versions through 1.94 for Perl create insecure session id.\n\nApache::Session::Generate::MD5 generates session ids insecurely. The default session id generator returns a MD5 hash seeded with the built-in rand() function, the 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. Predicable session ids could allow an attacker to gain access to systems."}], "id": "CVE-2025-40931", "lastModified": "2026-03-05T12:16:11.040", "metrics": {}, "published": "2026-03-05T02:16:39.960", "references": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://metacpan.org/dist/Apache-Session/source/lib/Apache/Session/Generate/MD5.pm#L27"}, {"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://www.openwall.com/lists/oss-security/2026/03/05/3"}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-338"}, {"lang": "en", "value": "CWE-340"}], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "type": "Secondary"}]}

{}

{}