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Vulnerability record · CVE-2017-20230 · published 21 April 2026

CVE-2017-20230: Nwclark storable stack-based buffer overflow vulnerability

NNwclark · Storable

Storable versions before 3.05 for Perl has a stack overflow. The 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.

10.0 CVSS 3.1 Critical EPSS 0.64% · top 51.4% CWE-121 · Stack-based buffer overflow
10.0CVSS 3.1 base score
0.64%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References
17 Jun 2026Last modified by NVD

Description

Storable versions before 3.05 for Perl has a stack overflow. The 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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patch Patch
https://github.com/Perl/perl5/issues/15831 Issue Tracking
https://metacpan.org/release/RURBAN/Storable-3.05/changes Release Notes
https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.html Third Party Advisory
https://www.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.html Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/04/21/5 Mailing List

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Source: NIST National Vulnerability Database (record CVE-2017-20230), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.