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CVE-2017-20230

10.0 · CRITICAL

Storable versions before 3.05 for Perl has a stack overflow.

Published Apr 21, 2026CWE-121EPSS 0.64%

Overview

CVE-2017-20230 is a critical-severity vulnerability. It was published on April 21, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/Perl/perl5/commit/a258c17c6937f79529c8319a829310e09cdbd216.patchGitHubgithub.com/Perl/perl5/issues/15831Refmetacpan.org/release/RURBAN/Storable-3.05/changesRefwww.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242533.htmlRefwww.nntp.perl.org/group/perl.perl5.porters/2017/01/msg242703.htmlRefwww.openwall.com/lists/oss-security/2026/04/21/5

How CyberStrike helps

Frequently asked questions

What is CVE-2017-20230?

CVE-2017-20230 is a critical-severity vulnerability. It was published on April 21, 2026 and has a CVSS 3.1 base score of 10.0 (CRITICAL).

How severe is CVE-2017-20230?

This vulnerability has a CVSS 3.1 base score of 10.0, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-20230?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-20230?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-20230 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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