{"id":"CVE-2026-118986","state":"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.","publishedAt":"2026-10-30T13:13:32.845Z","updatedAt":"2026-10-30T13:13:32.845Z","severity":null,"assigner":"CPANSec","products":["CallBackery"],"affected":[{"packageName":"CallBackery","packageURL":"pkg:cpan/CallBackery","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.62.0","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["CallBackery"],"programFiles":["lib/CallBackery/Config.pm"],"programRoutines":[{"name":"CallBackery::Config::secretFile"},{"name":"CallBackery::Config::reConfigure"}],"repo":"https://github.com/oetiker/callbackery"}],"references":["https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes"],"weaknesses":["CWE-338"],"ingestedAt":"2026-10-30T13:22:06.632Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/118xxx/CVE-2026-118986.json","commit":"abd2ae26f2ff440b8bdf0bfcfbf8e5180068914a","baselineCommit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-118986","state":"PUBLISHED","datePublished":"2026-10-30T13:13:32.845Z","dateUpdated":"2026-10-30T13:13:32.845Z","assignerShortName":"CPANSec","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","dateReserved":"2026-10-29T10:48:23.002Z"},"containers":{"cna":{"title":"CallBackery versions before 0.62.0 for Perl allow session cookie forgery via a signing secret generated with rand()","descriptions":[{"lang":"en","value":"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."}],"affected":[{"packageName":"CallBackery","packageURL":"pkg:cpan/CallBackery","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"0.62.0","versionType":"custom"}],"collectionURL":"https://cpan.org/modules","modules":["CallBackery"],"programFiles":["lib/CallBackery/Config.pm"],"programRoutines":[{"name":"CallBackery::Config::secretFile"},{"name":"CallBackery::Config::reConfigure"}],"repo":"https://github.com/oetiker/callbackery"}],"references":[{"url":"https://metacpan.org/release/OETIKER/CallBackery-0.62.0/changes","tags":["release-notes"]}],"problemTypes":[{"descriptions":[{"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":"2026-10-30T13:13:32.845Z"},"solutions":[{"lang":"en","value":"Upgrade to CallBackery 0.62.0 or later."}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"cpansec-cna-tool 0.1"}}}}}