CVE-2026-14678
PostgreSQL pg_trgm picksplit reads past end of buffer
Description
Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer. This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.
INFO
Published Date :
Aug. 13, 2026, 1:17 p.m.
Last Modified :
Aug. 13, 2026, 4:17 p.m.
Remotely Exploit :
No
Source :
f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
Affected Products
The following products are affected by CVE-2026-14678
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | MEDIUM | f86ef6dc-4d3a-42ad-8f28-e6d5547a5007 |
Solution
- Update PostgreSQL to versions 18.5, 17.11, 16.15, 15.19, or 14.24.
- Apply the latest security patches for your PostgreSQL version.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-14678.
| URL | Resource |
|---|---|
| https://www.postgresql.org/support/security/CVE-2026-14678/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-14678 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-14678
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-14678 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-14678 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 13, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-14678', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'no'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-08-13T14:39:23.325065Z'} -
New CVE Received by f86ef6dc-4d3a-42ad-8f28-e6d5547a5007
Aug. 13, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'n/a', 'product': 'PostgreSQL', 'versions': [{'status': 'affected', 'version': '18', 'lessThan': '18.5', 'versionType': 'rpm'}, {'status': 'affected', 'version': '17', 'lessThan': '17.11', 'versionType': 'rpm'}, {'status': 'affected', 'version': '16', 'lessThan': '16.15', 'versionType': 'rpm'}, {'status': 'affected', 'version': '15', 'lessThan': '15.19', 'versionType': 'rpm'}, {'status': 'affected', 'version': '0', 'lessThan': '14.24', 'versionType': 'rpm'}], 'defaultStatus': 'unaffected'}] Added Description Buffer over-read in PostgreSQL pg_trgm index picksplit function reads past end of a heap buffer. This might allow a table maintainer to infer limited memory values, via the lossy signal of index split choices. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected. Added CVSS V3.1 AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N Added CWE CWE-126 Added Reference https://www.postgresql.org/support/security/CVE-2026-14678/