CVE-2026-2003

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 Metrics

• v3.1•MEDIUM•Score: 4.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

EPSS Trends

Current EPSS score: 0.29%• Percentile: 22%

Techniques & Countermeasures

• CWE-1287•Improper Validation of Specified Type of Input

  The product receives input that is expected to be of a certain type, but it does not validate or incorrectly validates that the input is actually of the expected type.

Affected Systems

• alpine•postgresql15

  < 15.16-r0

• alpine•postgresql16

  < 16.12-r0 | < 16.12-r0 | < 16.12-r0

• alpine•postgresql17

  < 17.8-r0 | < 17.8-r0 | < 17.8-r0 | < 17.8-r0

• alpine•postgresql18

  < 18.2-r0 | < 18.2-r0

• chainguard•postgresql-13

  < 13.23-r5

• wolfi•postgresql-13

  < 13.23-r5

• debian•postgresql-13

  < 13.23-0+deb11u2

• debian•postgresql-15

  < 15.16-0+deb12u1

• debian•postgresql-17

  < 17.8-0+deb13u1

• debian•postgresql-18

  < 18.2-1

• postgresql•postgresql

  ≥ 14.0, < 14.21 | ≥ 15.0, < 15.16 | ≥ 16.0, < 16.12 | ≥ 17.0, < 17.8 | ≥ 18.0, < 18.2

References (3)

• https://www.postgresql.org/support/security/CVE-2026-2003/
• https://security-tracker.debian.org/tracker/CVE-2026-2003
• https://security.alpinelinux.org/vuln/CVE-2026-2003