{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-8503","assignerOrgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","state":"PUBLISHED","assignerShortName":"CPANSec","dateReserved":"2026-05-13T21:07:03.760Z","datePublished":"2026-05-15T11:06:29.777Z","dateUpdated":"2026-05-15T15:37:28.791Z"},"containers":{"cna":{"affected":[{"collectionURL":"https://cpan.org/modules","defaultStatus":"unaffected","packageName":"Apache-Session-Browsable","product":"Apache::Session::Generate::SHA256","programFiles":["lib/Apache/Session/Generate/SHA256.pm"],"programRoutines":[{"name":"Apache::Session::Generate::SHA256#generate"}],"repo":"https://github.com/LemonLDAPNG/Apache-Session-Browseable","vendor":"GUIMARD","versions":[{"lessThan":"1.3.19","status":"affected","version":"0","versionType":"custom"}]}],"descriptions":[{"lang":"en","value":"Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids.\n\nApache::Session::Generate::SHA256 generated session ids insecurely. The default session id generator returns a SHA-256 hash of the built-in rand() function, the epoch time, and the PID, that is hashed again. These are predictable, low-entropy sources. Predicable session ids could allow an attacker to gain access to systems.\n\nNote that version 1.3.19 has a fallback without warning to use insecure session generation method if the call to Crypt::URandom::urandom fails. However, this is unlikely as Crypt::URandom is a hardcoded requirement of the module.\n\nThis issue is similar to CVE-2025-40931 for Apache::Session::Generate::MD5."}],"impacts":[{"capecId":"CAPEC-115","descriptions":[{"lang":"en","value":"CAPEC-115 Authentication Bypass"}]},{"capecId":"CAPEC-102","descriptions":[{"lang":"en","value":"CAPEC-102 Session Sidejacking"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-340","description":"CWE-340 Generation of Predictable Numbers or Identifiers","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-338","description":"CWE-338 Use of Cryptographically Weak Pseudo-Random Number Generator","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"9b29abf9-4ab0-4765-b253-1875cd9b441e","shortName":"CPANSec","dateUpdated":"2026-05-15T11:06:29.777Z"},"references":[{"tags":["release-notes"],"url":"https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/changes"},{"url":"https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/diff/GUIMARD/Apache-Session-Browseable-1.3.18#lib/Apache/Session/Generate/SHA256.pm"},{"tags":["patch"],"url":"https://github.com/LemonLDAPNG/Apache-Session-Browseable/commit/cc915cbbd266776eec3dd8bf4748b15fa827dbd0.patch"},{"tags":["related"],"url":"https://www.cve.org/CVERecord?id=CVE-2025-40931"},{"tags":["related"],"url":"https://www.cve.org/CVERecord?id=CVE-2025-40932"}],"source":{"discovery":"UNKNOWN"},"timeline":[{"lang":"en","time":"2026-05-13T00:00:00.000Z","value":"Issue identified by CPANSec"},{"lang":"en","time":"2026-05-13T00:00:00.000Z","value":"Issue reported to author"},{"lang":"en","time":"2026-05-14T00:00:00.000Z","value":"Version 1.3.19 released"}],"title":"Apache::Session::Generate::SHA256 versions before 1.3.19 for Perl create insecure session ids","workarounds":[{"lang":"en","value":"Upgrade to version 1.3.19 or later."}],"x_generator":{"engine":"cpansec-cna-tool 0.1"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":6.5,"attackVector":"NETWORK","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","integrityImpact":"LOW","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"NONE","privilegesRequired":"NONE","confidentialityImpact":"LOW"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-05-15T15:36:59.141220Z","id":"CVE-2026-8503","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-15T15:37:28.791Z"}}]}}