{"id":"CVE-2026-120058","published":"2026-11-02T19:18:02.857","lastModified":"2026-11-02T20:17:38.920","description":"psqlODBC sizes its row cache from the column count of a cursor's first result, but recomputes the column count from each later FETCH reply without checking that it matches. A server not trusted under current SSL settings can answer a later FETCH with more columns and make the driver write tuple records past the end of the heap allocation. A keyset reply with fewer columns than the key fields also underflows the unsigned field count. This is reachable with UseDeclareFetch enabled. Versions before psqlODBC 18.00.0006 are affected.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-191","CWE-787"],"vendors":[],"products":[],"references":[{"url":"https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-6rmx-9q62-4w6m","tags":[]}],"exploitRefs":[{"url":"https://github.com/postgresql-interfaces/psqlodbc/security/advisories/GHSA-6rmx-9q62-4w6m","tags":[]}],"hasPoc":true,"ai":null}