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CVE-2026-14740

Perl Dbi out-of-bounds read

9.1 CRITICALEPSS 0.39%
  1. Published7 Jul 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Affected products

Perl Dbi< 1.650

Remediation

Fixed in
Perl Dbi≥ 1.650

References

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Frequently asked

Is CVE-2026-14740 being actively exploited?

CVE-2026-14740 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.39%.

How severe is CVE-2026-14740?

CVE-2026-14740 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.39% probability of exploitation.

Which products are affected by CVE-2026-14740?

Affected products include Perl Dbi.

How do I fix CVE-2026-14740?

Upgrade affected software to a fixed version, for example Perl Dbi 1.650 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.