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Fencer Intel
low 2.9

CVE-2026-108518 json

DBI versions before 1.656 for Perl crash via type confusion in dbi_profile when a database handle is destroyed under a Profile Path with an {attr} element

published 20d ago modified 10d ago also EUVD-2026-106230

cvss
2.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 17%
public exploits
0
none known

Summary

DBI versions before 1.656 for Perl crash via type confusion in dbi_profile when a database handle is destroyed under a Profile Path with an {attr} element.

An {attr} element names a database handle attribute, which dbi_profile reads from the handle's inner hash. It expects the inner handle as a reference and dereferences it, but a handle that is being destroyed hands back the inner hash itself, so the dereference yields the hash's bucket array. A type check on that pointer usually fails and the call goes unprofiled. When the memory it addresses passes the check, the attribute lookup dereferences a NULL or invalid pointer and the process dies on SIGSEGV.

The Path is set by the application, by the Profile handle attribute, or by the DBI_PROFILE environment variable, so `DBI_PROFILE={ImplementorClass}` can crash an unmodified program.

Patch / fix

  • cpan DBI 1.656
  • libdbi-perl Debian 14 1.656-1

debian advisories DEBIAN-CVE-2026-108518

  • perl-DBI openSUSE Tumbleweed 1.656.0-1.1

opensuse advisories openSUSE-SU-2026:12201-1

  • perl-DBI Azure Linux 3.0 1.656-1

azure linux advisories AZL-110058

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

Is CVE-2026-108518 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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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-2026-108518 updated cvss 4.7

perl-DBI: perl-dbi: Denial of Service via type confusion in dbi_profile

  • Red Hat Enterprise Linux 6 perl-DBI 1.643-26.el10_2.7
    affected: no fix planned “Out of support scope”
  • Red Hat Enterprise Linux 7 perl-DBI 1.643-26.el10_2.7 Red Hat Enterprise Linux 8 perl-DBI, perl-DBI 1.643-26.el10_2.7 Red Hat Enterprise Linux 9 perl-DBI, perl-DBI 1.643-26.el10_2.7 Red Hat Enterprise Linux 10 perl-DBI 1.643-26.el10_2.7
    affected: no fix available “Fix deferred”

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
10d ago

Exploit prediction

0.25% chance of exploitation in the next 30 days, higher than 17% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CISA ADP 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CNA 3.1 2.9 CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

  • cpan DBI

Classification

Weakness
  • CWE-843 Access of Resource Using Incompatible Type

References

Sources

Fencer Intel 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.