CVE-2026-57433

Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record

Published Jul 13, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record.

retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value.

A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization.

Remediation

Vendor Solution

Upgrade to Storable 3.41 or later.

Tracking

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Advisories

Source ID Title
Debian DLA Debian DLA DLA-4821-1 perl security update
Ubuntu USN Ubuntu USN USN-8684-1 Perl vulnerabilities
History
Type Values Removed Values Added
First Time appeared Haarg
Haarg storable
Vendors & Products Haarg
Haarg storable
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record. retrieve_hook_common reads a signed 32-bit item count from an SX_HOOK record and calls av_extend with that count plus one. A count of I32_MAX wraps the addition to a negative value. A crafted blob passed to thaw or retrieve triggers the overflow; av_extend receives the negative count and dies with a panic, terminating the deserialization.
Title Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record
Weaknesses CWE-190
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
CPANSec
Published
Updated
Nov 10, 2026, 12:48 PM
Reserved
Jun 24, 2026, 1:09 PM
Status
Modified
Published
Jul 13, 2026, 5:17 PM
Modified
Nov 10, 2026, 1:19 PM