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

criticalCVSS 9.1CVE-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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: critical — CVSS 9.1
Published: 2026-07-07
Last updated: 2026-07-10
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-14740

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-147400.41% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 33% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-14740	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

criticalCVE-2026-14740: DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an in…msrc

Recent advisories for DBI

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

criticalCVE-2026-14739: DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an…nvd · 2026-07-07
highCVE-2026-14380: DBI versions before 1.650 for Perl are vulnerable to code injection via caller-influenced Prof…nvd · 2026-07-07
highCVE-2026-14739: DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an…msrc · 2026-07-02
highCVE-2026-14380: DBI versions before 1.650 for Perl are vulnerable to code injection via caller-influenced Prof…msrc · 2026-07-02
criticalCVE-2026-14740: DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an in…msrc · 2026-07-02
highCVE-2026-9698: DBI versions before 1.648 for Perl saved errors in a limited-sized buffermsrc · 2026-06-09