CVE-2026-8503

{"id": "CVE-2026-8503", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-8503", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "yes"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-05-15T15:36:59.141220Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "cvssData": {"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"}, "impactScore": 2.5, "exploitabilityScore": 3.9}]}, "affected": [{"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "affectedData": [{"repo": "https://github.com/LemonLDAPNG/Apache-Session-Browseable", "vendor": "GUIMARD", "product": "Apache::Session::Generate::SHA256", "versions": [{"status": "affected", "version": "0", "lessThan": "1.3.19", "versionType": "custom"}], "packageName": "Apache-Session-Browsable", "programFiles": ["lib/Apache/Session/Generate/SHA256.pm"], "collectionURL": "https://cpan.org/modules", "defaultStatus": "unaffected", "programRoutines": [{"name": "Apache::Session::Generate::SHA256#generate"}]}]}], "published": "2026-05-15T12:17:09.557", "references": [{"url": "https://github.com/LemonLDAPNG/Apache-Session-Browseable/commit/cc915cbbd266776eec3dd8bf4748b15fa827dbd0.patch", "tags": ["Patch"], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://metacpan.org/release/GUIMARD/Apache-Session-Browseable-1.3.19/changes", "tags": ["Release Notes"], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"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": ["Product"], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-40931", "tags": ["Third Party Advisory"], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}, {"url": "https://www.cve.org/CVERecord?id=CVE-2025-40932", "tags": ["Third Party Advisory"], "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "9b29abf9-4ab0-4765-b253-1875cd9b441e", "description": [{"lang": "en", "value": "CWE-338"}, {"lang": "en", "value": "CWE-340"}]}], "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."}, {"lang": "es", "value": "Las versiones de Apache::Session::Generate::SHA256 anteriores a la 1.3.19 para Perl crean identificadores de sesi\u00f3n inseguros.\n\nApache::Session::Generate::SHA256 generaba identificadores de sesi\u00f3n de forma insegura. El generador predeterminado de identificadores de sesi\u00f3n devuelve un hash SHA-256 de la funci\u00f3n rand() incorporada, el tiempo de \u00e9poca y el PID, que se vuelve a aplicar hash. Estas son fuentes predecibles y de baja entrop\u00eda. Los identificadores de sesi\u00f3n predecibles podr\u00edan permitir a un atacante obtener acceso a los sistemas.\n\nTenga en cuenta que la versi\u00f3n 1.3.19 tiene un mecanismo de reserva sin advertencia para usar un m\u00e9todo de generaci\u00f3n de sesi\u00f3n inseguro si la llamada a Crypt::URandom::urandom falla. Sin embargo, esto es poco probable ya que Crypt::URandom es un requisito fijo del m\u00f3dulo.\n\nEste problema es similar a CVE-2025-40931 para Apache::Session::Generate::MD5."}], "lastModified": "2026-10-26T14:10:00.130", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:guimard:apache\\:\\:session\\:\\:generate\\:\\:sha256:*:*:*:*:*:perl:*:*", "vulnerable": true, "matchCriteriaId": "22FCEB1A-DF59-4660-A23B-389E42133610", "versionEndExcluding": "1.3.19"}], "operator": "OR"}]}], "sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e"}