{"id":"CVE-2026-118986","aliases":["EUVD-2026-113922","GHSA-fr5m-676f-94fg"],"status":"published","title":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand()","description":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().\n\nThe secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.\n\nAn attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00318,"percentile":0.25117,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-338"],"published":"2026-10-30T13:13:32Z","modified":"2026-11-06T16:46:47Z","references":[{"url":"https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes","tags":["release-notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-118986"},{"url":"https://github.com/advisories/GHSA-fr5m-676f-94fg"}],"sources":{"cve":[{"id":"CVE-2026-118986","title":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand()","description":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().\n\nThe secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.\n\nAn attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.","status":"published","published":"2026-10-30T13:13:32.845Z","modified":"2026-11-06T16:46:47.131Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-338"],"updated_at":"2026-11-06T17:28:52.192546Z"}],"euvd":[{"id":"EUVD-2026-113922","description":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().\n\nThe secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.\n\nAn attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.","status":"published","published":"2026-10-30T13:13:32Z","modified":"2026-11-06T16:46:47Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-06T18:05:41.257798Z"}],"ghsa":[{"id":"GHSA-fr5m-676f-94fg","title":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret...","description":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().\n\nThe secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.\n\nAn attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.","status":"published","published":"2026-10-30T15:34:32Z","modified":"2026-11-06T18:35:00Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-338"],"updated_at":"2026-11-06T19:01:26.771329Z"}],"nvd":[{"id":"CVE-2026-118986","description":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand().\n\nThe secret that signs session cookies is built from two calls to the built-in rand(), which is seeded with 32 bits. The secret therefore has at most 2**32 possible values, and one signed cookie is enough to test each candidate offline.\n\nAn attacker who obtains a single session cookie can recover the secret and sign cookies for any user, including an administrator.","status":"published","published":"2026-10-30T14:16:41.543Z","modified":"2026-11-06T17:17:16.76Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-338"],"updated_at":"2026-11-06T20:01:16.0125Z"}]}}