---
id: CVE-2026-55190
title: >-
  Event Schedule Vulnerable to SSRF: isUrlSafe() bypassable via bracketed IPv6
  literals (parse_url keeps the brackets so the IPv6 guard never matches) and a
  v4-only-resolver fail-open; reaches internal/localhost services on event
  import
summary: >-
  Event Schedule is an open-source platform to share events, sell tickets and
  bring communities together. In versions 1.0.0 and prior,
  App\Utils\UrlUtils::isUrlSafe() is the SSRF guard applied to user-supplied
  import URLs. It can be bypass…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-918
vendor: eventschedule
product: eventschedule
affected:
  - eventschedule <= 1.0.0
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T12:24:27.295Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-55190'
references:
  - url: >-
      https://github.com/eventschedule/eventschedule/security/advisories/GHSA-664j-55hw-p8fm
    label: >-
      https://github.com/eventschedule/eventschedule/security/advisories/GHSA-664j-55hw-p8fm
tags:
  - cve.org
ingestedAt: '2026-10-23T13:24:55.510Z'
---

## Overview

Event Schedule is an open-source platform to share events, sell tickets and bring communities together. In versions 1.0.0 and prior, App\Utils\UrlUtils::isUrlSafe() is the SSRF guard applied to user-supplied import URLs. It can be bypassed two ways, both reaching internal/localhost services when the URL is later fetched by ImportCuratorEvents (Http::get($url) then the response body is parsed and imported as events, and file_get_contents($ogImage)). At time of publication, there are no publicly available patches.

## Affected

- `eventschedule <= 1.0.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.