High severity · published Aug 13, 2026
CVE-2026-14668
PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read
8.1
CVSS
0.3%
EPSS
No
On KEV
Description
Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PostgreSQL · PostgreSQL
18 before 18.6; 17 before 17.11; 16 before 16.15; 15 before 15.19; before 14.24 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-14668
Vendor Advisory
https://www.postgresql.org/support/security/CVE-2026-14668/
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