# CVE-2017-20230

> Vulnerability · severity: **CRITICAL** (CVSS 10).

## 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.

## Key facts

- **CVE ID:** CVE-2017-20230
- **Published:** 2026-04-21
- **CVSS severity:** CRITICAL
- **CVSS base score:** 10
- **CWE codes:** CWE-121

## Affected products

- `nwclark:storable`

## Primary sources

- NIST NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-20230

## Citation

> AI Analytics. CVE-2017-20230. Retrieved 2026-06-25 from https://api.ai-analytics.org/cve/CVE-2017-20230. Derived from NIST NVD. Licensed CC0.

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