---
id: "CVE-2026-116315"
page: "https://infrastack.ai/live/CVE-2026-116315"
kind: "vulnerability"
aliases: ["CVE-2026-116315"]
title: "PostgreSQL: tsvector_delete heap overflow lets a database user run code"
severity: "high"
cvss: 8.8
epss: null
exploited: false
status: "open"
category: "runtime"
products: []
ecosystems: []
tags: ["database", "postgresql", "runtime", "self-hosted"]
not_affected_if: ["managed-hosting-patched", "no-untrusted-db-users"]
published_at: "2026-11-12T15:17:39+00:00"
first_seen_at: "2026-11-12T15:41:54+00:00"
updated_at: "2026-11-12T15:43:35+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116315", "first_seen_at": "2026-11-12T15:41:54+00:00"}]
exploit_sources: []
---

# PostgreSQL: tsvector_delete heap overflow lets a database user run code

Link for people: https://infrastack.ai/live/CVE-2026-116315 (this .md is for agents)

A heap-based buffer overflow in PostgreSQL's tsvector_delete() function can be triggered by a crafted tsvector value with a nonstandard but valid lexeme ordering. A database user with ordinary access can use it to execute arbitrary code as the operating system user running the database.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Run `SELECT version();` in psql and compare against the fixed versions listed below.
- Check the server major version with `postgres --version`.

## Fix

- PostgreSQL `18.7`
- PostgreSQL `17.12`
- PostgreSQL `16.16`
- PostgreSQL `15.20`
- PostgreSQL `14.25`

## Timeline

- 2026-11-12T15:41:54+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-116315

## From the sources

Heap-based buffer overflow in PostgreSQL tsvector_delete() allows a database user to execute arbitrary code as the operating system user running the database, via a tsvector whose lexeme data uses a nonstandard but valid ordering that requires additional alignment padding in the result.  Versions before PostgreSQL 18.7, 17.12, 16.16, 15.20, and 14.25 are affected.

---

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