CVE-2026-2006
Buffer Overflow in PostgreSQL Text Handling Enables Code Execution
Publication date: 2026-02-12
Last updated on: 2026-02-20
Assigner: PostgreSQL
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| postgresql | postgresql | From 18.0 (inc) to 18.2 (exc) |
| postgresql | postgresql | From 14.0 (inc) to 14.21 (exc) |
| postgresql | postgresql | From 15.0 (inc) to 15.16 (exc) |
| postgresql | postgresql | From 16.0 (inc) to 16.12 (exc) |
| postgresql | postgresql | From 17.0 (inc) to 17.8 (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-129 | 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
CVE-2026-2006 is a vulnerability in PostgreSQL caused by missing validation of multibyte character length during text manipulation.
This flaw allows a database user to craft specific queries that trigger a buffer overrun.
As a result, the attacker can execute arbitrary code with the privileges of the operating system user running the PostgreSQL server.
The vulnerability affects all PostgreSQL versions prior to 18.2, 17.8, 16.12, 15.16, and 14.21.
How can this vulnerability impact me? :
[{'type': 'paragraph', 'content': 'This vulnerability can have a severe impact because it allows an attacker to execute arbitrary code on the system running the PostgreSQL database.'}, {'type': 'paragraph', 'content': "Since the code runs with the operating system user's privileges, it can lead to full compromise of the database server."}, {'type': 'paragraph', 'content': 'The CVSS score of 8.8 indicates high severity, with potential impacts on confidentiality, integrity, and availability of data.'}] [1]
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should upgrade PostgreSQL to a fixed version. The vulnerability is resolved in PostgreSQL versions 18.2, 17.8, 16.12, 15.16, and 14.21 or later.
Applying these updates will prevent exploitation of the buffer overrun caused by missing validation of multibyte character length during text manipulation.