---
id: "CVE-2026-5700"
kind: "vulnerability"
aliases: ["CVE-2026-5700"]
title: "SABBATIC application: stored XSS via observaciones field on /mis-gastos"
severity: "medium"
cvss: 4.8
epss: null
exploited: false
status: "open"
category: "other"
products: []
ecosystems: []
tags: ["other", "sabbatic", "web-app"]
not_affected_if: ["unknown"]
published_at: "2026-10-29T12:17:13+00:00"
first_seen_at: "2026-10-29T12:24:38+00:00"
updated_at: "2026-10-29T12:25:41+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5700", "first_seen_at": "2026-10-29T12:24:38+00:00"}]
---

# SABBATIC application: stored XSS via observaciones field on /mis-gastos

The SABBATIC web application does not sanitize the 'observaciones' parameter on its /mis-gastos endpoint, so stored input is saved and later rendered. An attacker can plant JavaScript that runs in the browser of any user who views that page.

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

## Timeline

- 2026-10-29T12:24:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-5700

## From the sources

Stored Cross-Site Scripting (XSS) vulnerability in SABBATIC application that allows an attacker to store JavaScript code so that when a user views the page, code can be executed in the victim's browser. The list of assigned parameters and identifiers is as follows: 
parameter 'observaciones' in  /mis-gastos  endpoint.

---

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