{"id":"CVE-2017-20230","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-20230","generatedAt":"2026-10-28T20:11:28.645Z","title":"Storable versions before 3.05 for Perl has a stack overflow.","description":"Storable versions before 3.05 for Perl has a stack overflow.\n\nThe retrieve_hook function stored the length of the class name into a signed integer but in read operations treated the length as unsigned. This allowed an attacker to craft data that could trigger the overflow.","published":"2026-04-21T16:16:18.000Z","lastModified":"2026-06-17T01:15:28.000Z","status":"Analyzed","sourceIdentifier":"9b29abf9-4ab0-4765-b253-1875cd9b441e","cvss":{"version":"3.1","score":10,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H"},"cwe":["CWE-121"],"affected":["nwclark/storable"],"epss":{"score":0.00641,"percentile":0.50512,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patch","tags":["Patch"],"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e"},{"url":"https://github.com/Perl/perl5/issues/15831","tags":["Issue Tracking"],"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e"},{"url":"https://metacpan.org/release/RURBAN/Storable-3.05/changes","tags":["Release Notes"],"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e"},{"url":"https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.html","tags":["Third Party Advisory"],"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e"},{"url":"https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.html","tags":["Third Party Advisory"],"source":"9b29abf9-4ab0-4765-b253-1875cd9b441e"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/21/5","tags":["Mailing List"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-20230","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}