SecuriTricks - CVE-2026-2006

Description

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Product(s) Impacted

Vendor	Product	Versions
Postgresql	Postgresql	<14.21, <15.16, <16.12, <17.8, <18.2

Weaknesses

Common security weaknesses mapped to this vulnerability.

CWE-129

Improper Validation of Array Index

The product uses untrusted input when calculating or using an array index, but the product does not validate or incorrectly validates the index to ensure the index references a valid position within the array.

*CPE(s)

Affected systems and software identified for this CVE.

Type	Vendor	Product	Version	Update	Edition	Language	Software Edition	Target Software	Target Hardware	Other Information
a	postgresql	postgresql	<14.21	/	/	/	/	/	/	/
a	postgresql	postgresql	<15.16	/	/	/	/	/	/	/
a	postgresql	postgresql	<16.12	/	/	/	/	/	/	/
a	postgresql	postgresql	<17.8	/	/	/	/	/	/	/
a	postgresql	postgresql	<18.2	/	/	/	/	/	/	/

References

https://www.postgresql.org/support/security/CVE-2026-2006/

CVSS Score

8.8 / 10

CVSS Data - 3.1

Attack Vector: NETWORK
Attack Complexity: LOW
Privileges Required: LOW
Scope: UNCHANGED
Confidentiality Impact: HIGH
Integrity Impact: HIGH
Availability Impact: HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

View Vector String

Timeline

Published: Feb. 12, 2026, 2:16 p.m.
Last Modified: Feb. 12, 2026, 3:10 p.m.

Status : Undergoing Analysis

CVE has been recently published to the CVE List and has been received by the NVD.

More info

Source

f86ef6dc-4d3a-42ad-8f28-e6d5547a5007

CVE-2026-2006