CVE-2026-116308 PUBLISHED

PostgreSQL dict_int reads beyond zero-length tokens

Assigner: PostgreSQL
Reserved: 26.10.2026 Published: 12.11.2026 Updated: 12.11.2026

Buffer over-read in PostgreSQL dict_int allows a database user to disclose portions of server memory, via a zero-length token. Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

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.) affected from 15 to 15.20 (excl.) affected from 0 to 14.25 (excl.)

Affected Configurations

Attacker has permission to "CREATE EXTENSION dict_int", or another user previously issued that.

Credits

The PostgreSQL project thanks Anthropic OSS program for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-116308/

Problem Types

Buffer Over-read CWE