CVE-2026-14739: DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an extreme number

Q: How do I fix CVE-2026-14739?

dbi: upgrade to 1.650. Exact commands for each OS are on this page.

Q: Is CVE-2026-14739 being exploited?

CVE-2026-14739 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-14739 affect?

CVE-2026-14739 affects dbi. Severity is critical (CVSS 9.8). DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an extreme number of placeholders. The fix for CVE-2026-10879 did not allocate enough memory to handle approximately 1.2-million placeholders. DBI

Q: How urgent is CVE-2026-14739?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

This month

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-14739 is a critical-severity flaw (CVSS 9.8) affecting dbi. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an extreme number of placeholders. The fix for CVE-2026-10879 did not allocate enough memory to handle approximately 1.2-million placeholders. DBI version 1.650 sets a hard limit of 99,999 placeholders.

Why this priority

Critical severity
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 65%)
CISA exploited list	No
Weakness	CWE-787
Published	2026-07-07
Last modified	2026-10-25

Publisher (CNA): CPANSec · Vendor: perl

Last updated 2026-10-25 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-07-07 23:16 UTCPublished CVE record published
2026-10-25 20:10 UTCUpdated Record last modified

perl dbi UPGRADE

Affected: < 1.650

Fixed in: 1.650

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy dbi || rpm -q dbi || dbi --version

2. UPGRADE to 1.650 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade dbi

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade dbi

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-14739?

dbi: upgrade to 1.650. Exact commands for each OS are on this page.

Is CVE-2026-14739 being exploited?

CVE-2026-14739 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-14739 affect?

CVE-2026-14739 affects dbi. Severity is critical (CVSS 9.8). DBI versions before 1.650 for Perl have a heap overflow when preparsing SQL statements with an extreme number of placeholders. The fix for CVE-2026-10879 did not allocate enough memory to handle approximately 1.2-million placeholders. DBI

How urgent is CVE-2026-14739?

Priority 48/100. Critical severity; Remotely exploitable, no login, no user action

Software pages

Perl vulnerabilities

Related CVEs

CVE-2026-14740 CRITICAL 9.1 UPGRADE DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an initial SQL commen
CVE-2026-14380 HIGH 8.8 UPGRADE DBI versions before 1.650 for Perl are vulnerable to code injection via caller-influenced Profile. When a str

References

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