# CVE-2026-14740: DBI versions before 1.650 for Perl read one byte out-of-bounds in preparse when deleting an initial SQL comment

CVE-2026-14740 is fixed in 5 products on 1 platform, first by OPENSUSE-SU-2026:21293-1, released July 10, 2026. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2026-14740
- Priority: High
- CVSS: 9.1 (Important)
- EPSS: 0.0039
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 7, 2026
- Weakness: Out-of-bounds Read
- Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-14740

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libdbi-perl Debian 12.15 (bookworm) | 1.643-4+deb12u2 | [DEBIAN-CVE-2026-14740](https://patchblox.com/security/data/fix/linux/debian-cve-2026-14740.md) | Jul 11, 2026 |
| Linux | libdbi-perl Debian 13.5 (trixie) | 1.652-2~deb13u1 | [DEBIAN-CVE-2026-14740](https://patchblox.com/security/data/fix/linux/debian-cve-2026-14740.md) | Jul 11, 2026 |
| Linux | libdbi-perl Debian 14 | 1.650-1 | [DEBIAN-CVE-2026-14740](https://patchblox.com/security/data/fix/linux/debian-cve-2026-14740.md) | Jul 11, 2026 |
| Linux | perl-DBI amzn 2023 | 1.650-1.amzn2023.0.1 | [ALAS2023-2026-1982](https://patchblox.com/security/data/fix/linux/alas2023-2026-1982.md) | Jul 20, 2026 |
| Linux | perl-DBI opensuse-leap 16.0 | 1.647.0-160000.4.1 | [OPENSUSE-SU-2026:21293-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21293-1.md) | Jul 10, 2026 |
| Linux | perl-DBI sles 15.6 | 1.647.0-150600.12.18.1 | [SUSE-SU-2026:3415-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3415-1.md) | Jul 30, 2026 |
| Linux | perl-DBI sles 15.7 | 1.647.0-150600.12.18.1 | [SUSE-SU-2026:3415-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-3415-1.md) | Jul 30, 2026 |
| Linux | perl-DBI sles 16.0 | 1.647.0-160000.4.1 | [SUSE-SU-2026:22623-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-22623-1.md) | Jul 10, 2026 |
| Linux | perl-DBI-debuginfo amzn 2023 | 1.650-1.amzn2023.0.1 | [ALAS2023-2026-1982](https://patchblox.com/security/data/fix/linux/alas2023-2026-1982.md) | Jul 20, 2026 |
| Linux | perl-DBI-debugsource amzn 2023 | 1.650-1.amzn2023.0.1 | [ALAS2023-2026-1982](https://patchblox.com/security/data/fix/linux/alas2023-2026-1982.md) | Jul 20, 2026 |
| Linux | perl-DBI-tests amzn 2023 | 1.650-1.amzn2023.0.1 | [ALAS2023-2026-1982](https://patchblox.com/security/data/fix/linux/alas2023-2026-1982.md) | Jul 20, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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