CVE-2026-18024
Published:August 13, 2026
Updated:September 01, 2026
Buffer over-read in PostgreSQL ascii() SQL function allows a user to disclose up to 3 bytes after the end of a specific allocation, via a crafted text value. This is the same class of defect that CVE-2026-2006 fixed, though this instance has less impact. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.
Affected Packages
https://github.com/postgres/postgres.git (GITHUB):
Affected version(s) >=REL_16_0 <REL_16_15Fix Suggestion:
Update to version REL_16_15https://github.com/postgres/postgres.git (GITHUB):
Affected version(s) >=REL_18_0 <REL_18_6Fix Suggestion:
Update to version REL_18_6https://github.com/postgres/postgres.git (GITHUB):
Affected version(s) >=REL_15_0 <REL_15_19Fix Suggestion:
Update to version REL_15_19https://github.com/postgres/postgres.git (GITHUB):
Affected version(s) >=REL_17_0 <REL_17_11Fix Suggestion:
Update to version REL_17_11https://github.com/postgres/postgres.git (GITHUB):
Affected version(s) >=REL_14_0 <REL_14_24Fix Suggestion:
Update to version REL_14_24Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
5.3
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
LOW
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
NONE
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Weakness Type (CWE)
Buffer Over-read
EPSS
Base Score:
0.19