{"id":"CVE-2025-40925","state":"PUBLISHED","title":"Starch versions 0.14 and earlier generate session ids insecurely","description":"Starch versions 0.14 and earlier generate session ids insecurely.\n\nThe default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. 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\nPredicable session ids could allow an attacker to gain access to systems.","publishedAt":"2025-09-20T12:31:34.353Z","updatedAt":"2025-09-22T17:27:16.336Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","source":"CISA-ADP"},"assigner":"CPANSec","products":["BLUEFEET Starch"],"affected":[{"vendor":"BLUEFEET","product":"Starch","packageName":"Starch","defaultStatus":"unaffected","versions":[{"version":"0.01","status":"affected","lessThanOrEqual":"0.14","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["lib/Starch/Manager.pm"],"repo":"https://github.com/bluefeet/Starch"}],"references":["https://github.com/bluefeet/Starch/pull/5","https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch","https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm"],"weaknesses":["CWE-340","CWE-338"],"ingestedAt":"2026-10-29T20:09:09.358Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2025/40xxx/CVE-2025-40925.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2025-40925","state":"PUBLISHED","datePublished":"2025-09-20T12:31:34.353Z","dateUpdated":"2025-09-22T17:27:16.336Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2025-04-16T09:05:34.362Z"},"containers":{"cna":{"title":"Starch versions 0.14 and earlier generate session ids insecurely","descriptions":[{"lang":"en","value":"Starch versions 0.14 and earlier generate session ids insecurely.\n\nThe default session id generator returns a SHA-1 hash seeded with a counter, the epoch time, the built-in rand function, the PID, and internal Perl reference addresses. 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\nPredicable session ids could allow an attacker to gain access to systems."}],"affected":[{"vendor":"BLUEFEET","product":"Starch","packageName":"Starch","defaultStatus":"unaffected","versions":[{"version":"0.01","status":"affected","lessThanOrEqual":"0.14","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","programFiles":["lib/Starch/Manager.pm"],"repo":"https://github.com/bluefeet/Starch"}],"references":[{"url":"https://github.com/bluefeet/Starch/pull/5"},{"url":"https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch","tags":["patch"]},{"url":"https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm"}],"problemTypes":[{"descriptions":[{"cweId":"CWE-340","description":"CWE-340 Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"},{"cweId":"CWE-338","description":"CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator (PRNG)","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CPANSec","orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateUpdated":"2025-09-20T12:31:34.353Z"},"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2025-09-22T16:57:53.410409Z","id":"CVE-2025-40925","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-09-22T17:27:16.336Z"}}]}}}