{"id":"CVE-2025-40925","summary":"Starch versions 0.14 and earlier generate session ids insecurely","details":"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.","modified":"2026-08-12T03:51:40.797621302Z","published":"2025-09-20T12:31:34.353Z","database_specific":{"cna_assigner":"CPANSec","cwe_ids":["CWE-338","CWE-340"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40925.json"},"references":[{"type":"WEB","url":"https://cpan.org/modules"},{"type":"WEB","url":"https://metacpan.org/dist/Starch/source/lib/Starch/Manager.pm"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/40xxx/CVE-2025-40925.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-40925"},{"type":"FIX","url":"https://github.com/bluefeet/Starch/commit/5573449e64e0660f7ee209d1eab5881d4ccbee3b.patch"},{"type":"FIX","url":"https://github.com/bluefeet/Starch/pull/5"},{"type":"PACKAGE","url":"https://github.com/bluefeet/Starch"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/bluefeet/starch","events":[{"introduced":"f8322382a6e85249bd8f791165121a559813554e"},{"fixed":"5573449e64e0660f7ee209d1eab5881d4ccbee3b"}],"database_specific":{"extracted_events":[{"introduced":"0.01"},{"last_affected":"0.14"}],"source":["AFFECTED_FIELD","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-40925.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"}]}