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Fencer Vulns
medium 6.2

CVE-2026-88815 json

DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv

published 2026-09-28 42 d ago modified 2026-09-30 39 d ago also EUVD-2026-88342

cvss
6.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.2%
EPSS 0.2% chance of exploitation in 30 days, percentile 10%
public exploits
0
none known

Summary

DBI versions before 1.654 for Perl incorrectly treat numeric values as strings in sql_type_cast_svpv.

When casting to SQL_NUMERIC, sql_type_cast_svpv passes the string pointer and length of the SV to grok_number without stringifying it first. An integer (IV) or floating-point (NV) value has no valid string pointer, so grok_number reads from an invalid address, triggering a segmentation fault.

This is reachable in Perl using the sql_type_cast function:

my $num = 42; DBI::sql_type_cast( $num, DBI::SQL_NUMERIC, 0 );

Patch / fix

  • perl dbi 1.654
  • libdbi-perl Debian 12 1.643-4+deb12u3
  • libdbi-perl Debian 14 1.654-1

debian advisories DEBIAN-CVE-2026-88815

  • perl-DBI RHEL 9 1.643-9.el9_8.7
  • perl-DBI RHEL 8 1.641-4.el8_10
  • perl-DBI RHEL 10.2 1.643-26.el10_2.7

red hat advisories RHSA-2026:76760RHSA-2026:77576RHSA-2026:76762

  • perl-DBI SLE Module for Basesystem 15 SP7 1.647.0-150600.12.26.1
  • perl-DBI SLES for SAP 15 SP5, SLES for SAP 15 SP4, SLES 15 SP5-LTSS +5 more 1.642-150200.3.26.1
  • perl-DBI SLES LTSS Extended Security 12 SP5 1.628-5.29.1

suse advisories SUSE-SU-2026:4805-1SUSE-SU-2026:4612-1SUSE-SU-2026:4442-1

  • perl-DBI openSUSE Tumbleweed 1.655.0-1.1

opensuse advisories openSUSE-SU-2026:11966-1

  • perl-DBI AlmaLinux 8 1.641-11.module_el8.10.0+4309+f7cd2555
  • perl-DBI AlmaLinux 8 1.641-4.el8_10
  • perl-DBI AlmaLinux 9 1.643-9.el9_8.7
  • perl-DBI AlmaLinux 10 1.643-26.el10_2.7

almalinux advisories ALSA-2026:85916ALSA-2026:77576ALSA-2026:76760ALSA-2026:76762

  • perl-DBI Rocky Linux 8 1.641-11.module+el8.10.0+40389+be9de675
  • perl-DBI Rocky Linux 8 1.641-11.module+el8.10.0+40389+69d937a8
  • perl-DBI Rocky Linux 8 1.641-11.module+el8.10.0+40389+22ad89a7
  • perl-DBI Rocky Linux 8 1.641-11.module+el8.10.0+40389+75d7e2a7
  • perl-DBI Rocky Linux 9 1.643-9.el9_8.7
  • perl-DBI Rocky Linux 8 1.641-4.el8_10
  • perl-DBI Rocky Linux 10 1.643-26.el10_2.7

rocky linux advisories RLSA-2026:85916RLSA-2026:76760RLSA-2026:77576RLSA-2026:76762

  • perl-DBI Azure Linux 3.0 1.655-1

azure linux advisories AZL-105212

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-88815 updated cvss 7.5

perl-DBI: perl-DBI: Denial of Service via invalid memory read during numeric type casting

  • Red Hat Enterprise Linux 6 perl-DBI 1.609-4.el6
    affected: workaround, no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 perl-DBI 1.609-4.el6
    affected: workaround, no fix available
  • Red Hat Enterprise Linux AppStream (v. 8) perl-DBI 1.641-11.module+el8.10.0+25025+b6ff827c, perl-DBI 1.641-11.module+el8.10.0+25025+dbc88c75
    fixed: vendor fix RHSA-2026:85916
  • Red Hat Enterprise Linux AppStream (v. 9) perl-DBI 1.643-9.el9_8.7
    fixed: vendor fix RHSA-2026:76760
  • Red Hat Enterprise Linux AppStream (v. 10) perl-DBI 1.643-26.el10_2.7
    fixed: vendor fix RHSA-2026:76762
  • Red Hat Enterprise Linux BaseOS (v. 8) perl-DBI 1.641-4.el8_10
    fixed: vendor fix RHSA-2026:77576

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
partial
Assessed
39 d ago

Exploit prediction

0.20% chance of exploitation in the next 30 days, higher than 10% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/perl5-dbi/dbi/security/advisories/GHSA-c8vq-w3wr-6979 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA 3.1 6.2 CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.