CVE-2026-108518

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.

CVSS v3 2.9 LOW

2.9^/10

CVSS v3 : LOW

Vector :

Exploitability : 1.4 / Impact : 1.4

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/perl5-dbi/dbi/commit/c2ff4df575d7af625bb4d0d1ef7539f90b22d8b2.patch
https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3
https://metacpan.org/release/HMBRAND/DBI-1.656/changes
http://www.openwall.com/lists/oss-security/2026/10/20/37
https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3

Configurations

No configuration.

History

30 Oct 2026, 13:18

Type	Values Removed	Values Added
References	~~() https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 -~~	() https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3 -
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 2.9

21 Oct 2026, 01:17

Type	Values Removed	Values Added
References		() http://www.openwall.com/lists/oss-security/2026/10/20/37 -

20 Oct 2026, 22:18

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-20 22:18

Updated : 2026-10-30 13:18

NVD link : CVE-2026-108518

Mitre link : CVE-2026-108518

CVE.ORG link : CVE-2026-108518

JSON object : View

Products Affected

No product.

CWE

CWE-843

Access of Resource Using Incompatible Type ('Type Confusion')

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