CVE-2026-57433
Storable versions before 3.41 for Perl have a signed integer overflow when deserializing a crafted SX_HOOK record
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.
INFO
Published Date :
July 13, 2026, 5:17 p.m.
Last Modified :
July 14, 2026, 5:47 p.m.
Remotely Exploit :
Yes !
Source :
9b29abf9-4ab0-4765-b253-1875cd9b441e
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
Solution
- Update Perl to a version later than 3.41.
- Apply patches for affected Perl versions.
- Avoid processing untrusted data.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-57433.
| URL | Resource |
|---|---|
| https://github.com/Perl/perl5/commit/e4f681784bcdeaa91ff02a2fa4cdcae5c46779d7.patch | Patch |
| http://www.openwall.com/lists/oss-security/2026/07/13/7 | Mailing List Patch Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-57433 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-57433
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-57433 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-57433 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 14, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:nwclark:storable:*:*:*:*:*:perl:*:* versions up to (excluding) 3.41 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/07/13/7 Types: Mailing List, Patch, Third Party Advisory Added Reference Type CPANSec: https://github.com/Perl/perl5/commit/e4f681784bcdeaa91ff02a2fa4cdcae5c46779d7.patch Types: Patch -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 14, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added SSVC {'id': 'CVE-2026-57433', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-14T13:36:25.483542Z'} -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 13, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/13/7 -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Jul. 13, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/Perl/perl5', 'vendor': 'HAARG', 'product': 'Storable', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '3.41', 'versionType': 'custom'}], 'packageName': 'Storable', 'programFiles': ['Storable.xs'], 'collectionURL': 'https://cpan.org/modules', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': 'retrieve_hook_common'}]}] 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. Added CWE CWE-190 Added Reference https://github.com/Perl/perl5/commit/e4f681784bcdeaa91ff02a2fa4cdcae5c46779d7.patch