Medium severity · published Feb 12, 2026
CVE-2026-2003
PostgreSQL oidvector discloses a few bytes of memory
4.3
CVSS
0.3%
EPSS
No
On KEV
Description
Improper validation of type "oidvector" in PostgreSQL allows a database user to disclose a few bytes of server memory. We have not ruled out viability of attacks that arrange for presence of confidential information in disclosed bytes, but they seem unlikely. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PO
PostgreSQL · PostgreSQL
18 before 18.2; 17 before 17.8; 16 before 16.12; 15 before 15.16; before 14.21 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-2003
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-2003
Vendor Advisory
https://www.postgresql.org/support/security/CVE-2026-2003/
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