---
id: CVE-2026-100870
title: >-
  Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build
  administrator password-reset links using the request Host header without
  validation, allowing unauthenticated attackers to redirect reset tokens to
  attacker-contro…
summary: >-
  Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build
  administrator password-reset links using the request Host header without
  validation, allowing unauthenticated attackers to redirect reset tokens to
  attacker-contro…
severity: high
cvss: 8.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-640
vendor: Sylius
product: sylius/sylius
affected:
  - sylius/sylius >= 1.12.0 < 1.12.25
  - sylius/sylius >= 1.13.0 < 1.13.17
  - sylius/sylius >= 1.14.0 < 1.14.20
  - sylius/sylius >= 2.0.0 < 2.1.16
  - sylius/sylius >= 2.2.0 < 2.2.9
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T13:16:38.240'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-100870'
references:
  - url: 'https://github.com/Sylius/Sylius'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/Sylius/Sylius/commit/1255d75b20d3d88a5e5c8d46791504134c838480
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/pull/19215'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/releases/tag/v2.2.9'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/Sylius/Sylius/security/advisories/GHSA-77w3-2367-7xvq'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/sylius-before-1.12.25-1.13.17-1.14.20-2.1.16-and-2.2.9-admin-password-reset-poisoning-via-host-header
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T13:53:26.574Z'
---

## Overview

Sylius versions before 1.12.25, 1.13.17, 1.14.20, 2.1.16, and 2.2.9 build administrator password-reset links using the request Host header without validation, allowing unauthenticated attackers to redirect reset tokens to attacker-controlled domains. Attackers can request password resets for known administrator email addresses with forged Host headers to intercept valid reset tokens and take over administrator accounts.

## Remediation

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