CVE-2026-14739
Heap overflow in Perl DBI when parsing extreme placeholder counts, may allow code execution.
Is CVE-2026-14739 being exploited?
Not confirmed. CVE-2026-14739 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.41% probability of exploitation in the next 30 days.
How severe is CVE-2026-14739?
CVE-2026-14739 is rated Critical. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-14739?
Yes. A fix has been recorded for CVE-2026-14739. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-14739 affect?
CVE-2026-14739 affects Perl DBI < 1.650, Perl applications using DBI, Services that preparse SQL with many placeholders. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-14739?
Upgrade DBI to >=1.650 and validate/limit SQL placeholder counts.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Heap overflow during SQL preparsing with ~1.2M placeholders; attacker-supplied crafted SQL can crash processes or enable remote code execution.
Immediate action required
- affected< 1.650
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.