VDB-436384 · CVE-2026-116333 · GCVE-0-2026-116333

PostgreSQL up to 17.11/18.6 Parallel B-tree Scans buffer over-read

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.00+

Summaryinfo

A vulnerability was found in PostgreSQL up to 17.11/18.6 and classified as problematic. This vulnerability affects unknown code of the component Parallel B-tree Scans. Executing a manipulation can lead to buffer over-read. The identification of this vulnerability is CVE-2026-116333. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in PostgreSQL up to 17.11/18.6. This vulnerability affects an unknown code of the component Parallel B-tree Scans. The manipulation with an unknown input leads to a buffer over-read vulnerability. The CWE definition for the vulnerability is CWE-126. The product reads from a buffer using buffer access mechanisms such as indexes or pointers that reference memory locations after the targeted buffer. As an impact it is known to affect confidentiality. CVE summarizes:

Buffer over-read in PostgreSQL parallel B-tree scans allows an object creator to read attacker-chosen server-memory addresses, via a function incorrectly marked PARALLEL SAFE or STABLE to make participating workers build different scan-key arrays. Within major versions 17-18, minor versions before PostgreSQL 18.7 and 17.12 are affected. Versions before PostgreSQL 17 are unaffected.

The advisory is shared for download at postgresql.org. This vulnerability was named CVE-2026-116333 since 10/26/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available.

Upgrading to version 17.12 or 18.7 eliminates this vulnerability.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Database Software

Name

PostgreSQL

Version

License

open-source

Website

Product: https://www.postgresql.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 6.5
CNA Vector (PostgreSQL): 🔒

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Buffer over-read
CWE: CWE-126 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: PostgreSQL 17.12/18.7

Timelineinfo

10/26/2026 CVE reserved
11/12/2026 +17 days Advisory disclosed
11/12/2026 +0 days VulDB entry created
11/12/2026 +0 days VulDB entry last update

Sourcesinfo

Product: postgresql.org

Advisory: postgresql.org
Status: Confirmed

CNA: PostgreSQL
CVE: CVE-2026-116333 (🔒)

GCVE (CVE): GCVE-0-2026-116333
GCVE (VulDB): GCVE-100-436384

Entryinfo

Created: 11/12/2026 15:44
Changes: 11/12/2026 15:44 (63)
Complete: 🔍
Cache ID: 216::103