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.
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-108518?
CVE-2026-108518 is a vulnerability, published on 20 Oct 2026.
Official description
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.
Weakness: CWE-843
Which versions are affected by CVE-2026-108518?
How do I fix CVE-2026-108518?
Upgrade to a fixed version.
Is CVE-2026-108518 being exploited?
There is no known exploitation of CVE-2026-108518 in the wild and no public exploit code.
Sources
Also known as AZL-110058, BELL-CVE-2026-108518, DEBIAN-CVE-2026-108518, ECHO-f0a7-1939-5410, GHSA-7393-6f8r-fhh3, OESA-2026-4597 and 4 more.