{"cve":"CVE-2026-5084","nvd":{"published":"2026-05-11T08:16:16.210","modified":"2026-10-26T18:10:00.173","status":"Deferred","description":"WebDyne::Session versions before 3.003_704 for Perl generate the session id insecurely.\n\nThe session handler generates the session id from an MD5 hash seeded with a call to the built-in rand() function. The rand function is passed a maximum value based on the process id, the epoch time and the reference address of the object, but this information will have no effect on the overall quality of the seed of the message digest.\n\nThe rand function is seeded by 32-bits and is predictable. It is considered unsuitable for cryptographic purposes.\n\nPredictable session ids could allow an attacker to gain access to systems.\n\nNote that WebDyne::Session versions 1.042 and earlier appear to be in separate distributions from WebDyne.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","score":6.5},"cwes":["CWE-338","CWE-340"],"references":["https://github.com/aspeer/WebDyne/commit/7a3f949dc24e62a276eb0db629db64aca356e954.patch","https://metacpan.org/release/ASPEER/WebDyne-2.075/source/lib/WebDyne/Session.pm#L120","https://security.metacpan.org/docs/guides/random-data-for-security.html","https://webdyne.org","http://www.openwall.com/lists/oss-security/2026/05/11/3"],"products":[],"source":"nvd","synced_at":"2026-10-26T18:27:13.530666824+00:00"},"epss":{"cve":"CVE-2026-5084","score":0.00328,"percentile":0.25742,"date":"2026-10-26"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}