CVE-2026-15043

CRITICALPre-NVD 9.8Trending — 4 sources updated this week
9.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.8Exploit: NoneExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text.

DBI::SQL::Nano, DBI's built-in mini-SQL engine, evaluated WHERE predicates incorrectly in some cases. In the non-numeric string branch of the is_matched method, <= was evaluated using Perl's ge operator, and >= was evaluated using Perl's le operator.

SQL::Nano is the fallback query engine for DBI's file-backed drivers (DBD::File, DBD::DBM, CSV-style drivers) whenever SQL::Statement is not installed, and is forced whenever DBI_SQL_NANO=1. Queries over such tables use these predicates directly.

The impact depends on the context. Where an application relies on a WHERE clause to filter file-backed data for policy or authorization, an inverted <=/>= comparison silently returns the wrong rows.

CVSS v3
9.8
EG Score
0.0(none)
EPSS
40.2%
KEV
Not listed

Published

July 14, 2026

Last Modified

July 14, 2026

Advisory Details (3)

Auto-updated Jul 14, 2026
Patch available. Sources: github.
generic

oss-security - CVE-2026-15043: DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text

http://www.openwall.com/lists/oss-security/2026/07/14/9
github Patch Available

DBI::SQL::Nano: incorrect predicate evaluation (string <=/>= inverted, IS ignores RHS) can bypass file-backed filters · Advisory · perl5-dbi/dbi · GitHub

https://github.com/perl5-dbi/dbi/security/advisories/GHSA-mv45-ff6j-x9jp
generic
https://github.com/perl5-dbi/dbi/commit/e9742ef85a75867cbd696860e3bf3e32b681f98d.patch

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 8× in last 7d / 8× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-14 14:30 UTCMITRE cvelistV5CVSS v3 → 9.8 · severity → CRITICAL
  4. 2026-07-14 13:19 UTCNVD update
  5. 2026-07-14 11:40 UTCMITRE cvelistV5
  6. 2026-07-14 11:18 UTCNVD update
  7. 2026-07-14 09:56 UTCEG score recompute
  8. 2026-07-14 09:55 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-15043?
CVE-2026-15043 is a critical vulnerability published on July 14, 2026. DBI::SQL::Nano versions from 1.42 before 1.651 for Perl have inverted <= and >= SQL operators on text. DBI::SQL::Nano, DBI's built-in mini-SQL engine, evaluated WHERE predicates incorrectly in some cases. In the non-numeric string branch of the is_matched method, <= was evaluated using Perl's ge…
When was CVE-2026-15043 disclosed?
CVE-2026-15043 was first published in the National Vulnerability Database on July 14, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-15043 actively exploited?
CVE-2026-15043 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 40.2% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-15043?
CVE-2026-15043 has a CVSS v3.1 base score of 9.8 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 0.0.
How do I remediate CVE-2026-15043?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-15043, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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