CVE-2026-120067
psqlODBC stack buffer overflow copying ctid and oid values for updatable cursors
No exploitation reported by the sources we read.
- Published2026-11-02
- WeaknessCWE-121 · CWE-787
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
For updatable cursors, which are enabled by default, psqlODBC adds hidden ctid and, for tables with OIDs, oid columns to the query. It copies each value into a 32-byte stack buffer using the length the server sent, without checking it against the buffer size, so a value of 32 bytes or more writes past the buffer. A server not trusted under current SSL settings can send such a value. So can any database user who can create a view with its own column named ctid that the application reads with an updatable cursor. Builds with _FORTIFY_SOURCE abort; other builds overwrite adjacent stack memory. Versions before psqlODBC 18.00.0006 are affected.
Timeline
dates in UTC- 2026-11-0219:09CVE publishedCNA
Observed activity
isMalicious corpus · updated 2026-11-02 15:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-120067?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-120067?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
Products declared by the CNA
As PostgreSQL, the CNA that assigned this CVE, declared them in the CVE record; versions as written. NVD lists no product for this CVE yet: this is the only product data so far.
- PostgreSQL psqlODBCother versions: not affected
https://github.com/postgresql-interfaces/psqlodbc
Affected- < 18.00.0006fixed in 18.00.0006custom
Source: the CNA record (CVE Program), © The MITRE Corporation,CVE Terms of UseCVE recordupdated 2026-11-02
Neither OSV.dev nor the vendor advisories we read list affected versions for CVE-2026-120067 yet.
Fix
No fix published by the sources we read yet. NVD record
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
- Metasploit modules
- none listed Metasploit Framework
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2026-11-02
- Last Modified
- 2026-11-02
- NVD status
- Received
Frequently asked questions
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