high · CVSS v3 7.5

CVE-2026-120057

psqlODBC copies the reply to a large-object read (loread) into the application's buffer using the length sent by the ser…

Description

psqlODBC copies the reply to a large-object read (loread) into the application's buffer using the length sent by the server, without comparing it to the buffer size. A server not trusted under current SSL settings, or a man-in-the-middle, can return more bytes than the buffer holds and overwrite adjacent memory in the client process with server-chosen bytes. Fetching any large-object column is sufficient to trigger it. Versions before psqlODBC 18.00.0006 are affected.

Scores

Severity
high
CVSS v2
7.6
CVSS v3
7.5
CVSS v4
—
EPSS
—

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