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CVE-2026-57433

43
FAUCET Score

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.

First published: Jul 13, 2026Last modified: Jul 13, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 3.41CPE matchmatch criteria
cpe:2.3:a:nwclark:storable:*:*:*:*:*:perl:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 5th percentile among its peer group of 36,821 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 perl 5.38.2-512 on Azure Linux 3.0Fixed in: 5.38.2-514

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-57433Critical

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

Jul 14, 2026

References

github.com / Perl/perl5/commit/e4f681784bcdeaa91ff02a2fa4cdcae5c46779d7.patch
Patch
openwall.com / lists/oss-security/2026/07/13/7
Mailing ListPatchThird Party Advisory