---
id: "CVE-2026-91057"
kind: "vulnerability"
aliases: ["CVE-2026-91057"]
title: "GX multi-line text view reads one byte past buffer end"
severity: "medium"
cvss: 4.6
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["embedded-ui", "gx", "package"]
not_affected_if: []
published_at: "2026-10-20T16:17:16+00:00"
first_seen_at: "2026-10-23T21:57:20+00:00"
updated_at: "2026-10-25T04:35:33+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-91057", "first_seen_at": "2026-10-23T21:57:20+00:00"}]
---

# GX multi-line text view reads one byte past buffer end

The multi-line text view display function reads one byte beyond the end of the application's text buffer when the string ends with a carriage return. The over-read can make callers advance past the string end, causing a second over-read and a row of text that is not in the source.

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

## Timeline

- 2026-10-23T21:57:20+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-91057

## From the sources

`_gx_multi_line_text_view_display_info_get()` reads one byte past the end of the application's text buffer when the string it is given ends with a carriage return (`\r`). The over-read can also cause callers to advance their index past the end of the string, producing a second over-read in `_gx_multi_line_text_view_string_total_rows_compute()` and a row of text that is not in the source.

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_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_