CVE-2026-15043
Perl DBI::SQL::Nano inverts <= and >= on text, returning incorrect query results
Is CVE-2026-15043 being exploited?
Not confirmed. CVE-2026-15043 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 0.39% probability of exploitation in the next 30 days.
How severe is CVE-2026-15043?
CVE-2026-15043 is rated Critical with a CVSS score of 9.8. 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-2026-15043?
Yes. A fix has been recorded for CVE-2026-15043. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-15043 affect?
CVE-2026-15043 affects DBI::SQL::Nano versions >=1.42 and <1.651, DBD::File, DBD::DBM, CSV-style DBI drivers, and 1 further product or version. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-15043?
Upgrade DBI::SQL::Nano to >=1.651; audit DBI queries and access controls
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Incorrect <=/>= evaluation in file-backed DBI drivers can return unauthorized rows, enabling data disclosure or authorization bypass.
Patch when possible
- affected>= 1.42 and < 1.651
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.