CVE Feed

    Dashboard / CVE / CVE-2026-18024

    CVE-2026-18024

    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.

    Published:Aug 13, 2026
    Last Modified:Aug 29, 2026
    EPS:Aug 13, 2026
    EPSS Score:0.00195
    CVSS Score:4.3

    Affected Products

    Vendor
    Postgresql
    Product
    Postgresql

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-126 Buffer Over-read

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-14671 (CVSS 8.8) — Type confusion in PostgreSQL module "refint" allows an object creator to execute arbitrary code as the operati…
    CVE-2026-6471 (CVSS 7.2) — Missing authorization in PostgreSQL logical decoding allows a non-superuser holding REPLICATION privilege to d…
    CVE-2026-6470 (CVSS 4.3) — Missing authorization in PostgreSQL DDL commands allows an object creator to achieve denial of service against…
    CVE-2026-6469 (CVSS 3.8) — Incorrect ownership assignment in PostgreSQL ALTER TABLE ALTER TYPE command reassigns ownership of dependent s…
    CVE-2026-6464 (CVSS 8.1) — Untrusted data inclusion in PostgreSQL psql COPY may allow a server administrator to elicit execution of data …
    CVE-2026-19385 (CVSS 8.8) — Heap buffer overflow in PostgreSQL pg_dump of long function transform lists allows an object creator to execut…
    CVE-2026-18408 (CVSS 8.8) — Untrusted data inclusion in pg_dump in PostgreSQL allows a malicious superuser of the origin server to inject …
    CVE-2026-16241 (CVSS 3.8) — Integer underflow in PostgreSQL ECPG allows a database server administrator to achieve temporary denial of ser…
    CVE-2026-16239 (CVSS 8.8) — Type confusion in PostgreSQL "portal"/cursor lifecycle allows a user to execute arbitrary code as the operatin…
    CVE-2026-16238 (CVSS 8.8) — Type confusion in PostgreSQL pg_restore_attribute_stats() allows an object creator to execute arbitrary code a…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High