CVE-2026-14740
DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an initial SQL comment
Description
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.
INFO
Published Date :
July 7, 2026, 11:16 p.m.
Last Modified :
July 10, 2026, 2:40 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 DBI for Perl to version 1.650 or later.
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-2026-14740.
| URL | Resource |
|---|---|
| https://github.com/perl5-dbi/dbi/commit/fc16f9e8b3dd5c65caf1867781ab2bfe2fadcc01.patch | Patch |
| https://github.com/perl5-dbi/dbi/security/advisories/GHSA-35f4-f8m9-w8xg | Vendor Advisory |
| https://metacpan.org/release/HMBRAND/DBI-1.650/changes | Release Notes |
| http://www.openwall.com/lists/oss-security/2026/07/07/17 | 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-2026-14740 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-2026-14740
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-2026-14740 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-14740 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. 10, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:perl:dbi:*:*:*:*:*:*:*:* versions up to (excluding) 1.650 Added Reference Type CVE: http://www.openwall.com/lists/oss-security/2026/07/07/17 Types: Mailing List, Patch, Third Party Advisory Added Reference Type CPANSec: https://github.com/perl5-dbi/dbi/commit/fc16f9e8b3dd5c65caf1867781ab2bfe2fadcc01.patch Types: Patch Added Reference Type CPANSec: https://github.com/perl5-dbi/dbi/security/advisories/GHSA-35f4-f8m9-w8xg Types: Vendor Advisory Added Reference Type CPANSec: https://metacpan.org/release/HMBRAND/DBI-1.650/changes Types: Release Notes -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 08, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H Added SSVC {'id': 'CVE-2026-14740', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-07-08T13:58:06.622142Z'} -
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Jul. 08, 2026
Action Type Old Value New Value Added Reference http://www.openwall.com/lists/oss-security/2026/07/07/17 -
New CVE Received by 9b29abf9-4ab0-4765-b253-1875cd9b441e
Jul. 07, 2026
Action Type Old Value New Value Added Affected [{'repo': 'https://github.com/perl5-dbi/dbi', 'vendor': 'HMBRAND', 'product': 'DBI', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.650', 'versionType': 'custom'}], 'packageName': 'DBI', 'programFiles': ['DBI.xs'], 'collectionURL': 'https://cpan.org/modules', 'defaultStatus': 'unaffected', 'programRoutines': [{'name': 'preparse'}]}] Added Description 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. Added CWE CWE-125 Added Reference https://github.com/perl5-dbi/dbi/commit/fc16f9e8b3dd5c65caf1867781ab2bfe2fadcc01.patch Added Reference https://github.com/perl5-dbi/dbi/security/advisories/GHSA-35f4-f8m9-w8xg Added Reference https://metacpan.org/release/HMBRAND/DBI-1.650/changes