Vulnerability Report

CVE-2026-14740

Title: Out-of-Bounds Read in SQL Preparser

Memory Corruption

Proof Of Concept

No public PoC currently indexed for CVE-2026-14740.

CWE Category CWE-125

Published Date Jul 07, 2026

Modified Date Jul 10, 2026

Exploit Status Not Found

Score 9.1 CVSS v

Exploit Probability (EPSS)

0.41%

Vulnerability Summary

CVE-2026-14740: DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an initial SQL comment. The preparse method normalises SQL and removes comments. When the SQL starts with a comment line, the deletion of that line during normalisation led to an out-of-bounds read by one byte. The result is a fault on memory-hardened builds and nondeterministic newline retention on normal builds.

Impacted Vendors

perl 1

Reference Links

https://github.com/perl5-dbi/dbi/commit/fc16f9e8b3dd5c65caf1867781ab2bfe2fadcc01.patch https://github.com/perl5-dbi/dbi/security/advisories/GHSA-35f4-f8m9-w8xg https://metacpan.org/release/HMBRAND/DBI-1.650/changes

CVSS v3.1

Source Entity 134c704f-9b21-4f2e-91b3-4a467353bcc0

Severity CRITICAL

9.1

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

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

Associated Attack Patterns (CAPEC)

Total: Patterns