{"id":"CVE-2026-108518","title":"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","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.\n\nAn {attr} element names a database handle attribute, which dbi_profile reads fro…","severity":"none","cwe":["CWE-843"],"product":"DBI","affected":["DBI < 1.656"],"published":"2026-10-20","updated":"2026-10-21","sourceUpdated":"2026-10-21T00:17:16.110Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-108518","references":[{"url":"https://github.com/perl5-dbi/dbi/security/advisories/GHSA-7393-6f8r-fhh3"},{"url":"https://github.com/perl5-dbi/dbi/commit/c2ff4df575d7af625bb4d0d1ef7539f90b22d8b2.patch"},{"url":"https://metacpan.org/release/HMBRAND/DBI-1.656/changes"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T22:23:33.909Z","slug":"CVE-2026-108518","body":"## Overview\n\nDBI 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.\n\nAn {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.\n\nThe 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.\n\n## Affected\n\n- `DBI < 1.656`\n\n## Remediation\n\nUpgrade to DBI 1.656 or later.","depth":"sunlit","depthScore":3,"depthScoreParts":{"impact":2.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}