CVE-2026-120152 PUBLISHED

PostgreSQL pg_show_all_settings() use-after-free discloses memory

Assigner: PostgreSQL
Reserved: 30.10.2026 Published: 12.11.2026 Updated: 12.11.2026

Use after free in PostgreSQL pg_show_all_settings() allows a database user to retrieve memory contents, via loading a module while the function is scanning custom-variable placeholders that the module replaces and frees. Within major versions 16-18, minor versions before PostgreSQL 18.7, 17.12, and 16.16 are affected. Versions before PostgreSQL 16 are unaffected.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS Score: 4.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	Low
Privileges Required	Low	Integrity Impact	None
User Interaction	None	Availability Impact	None

CVSS 3.1

Product Status

Vendor	n/a
Product	PostgreSQL
Versions	Default: unaffected affected from 18 to 18.7 (excl.) affected from 17 to 17.12 (excl.) affected from 16 to 16.16 (excl.)

Credits

The PostgreSQL project thanks Stephan Lipp for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-120152/

Problem Types

Use After Free CWE