---
id: CVE-2025-26862
title: >-
  Unexpected authentication form rendering in HTML Form Adapter using only
  non-default redirectless mode in PingFederate allows authentication attempts
  which may enable brute force login attacks.
summary: >-
  Unexpected authentication form rendering in HTML Form Adapter using only
  non-default redirectless mode in PingFederate allows authentication attempts
  which may enable brute force login attacks.
severity: none
cwe:
  - CWE-307
published: '2025-10-27'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T23:10:00.237'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-26862'
references:
  - url: >-
      https://support.pingidentity.com/s/article/PingFederate-unexpected-template-rendering-in-redirectless-mode
    label: responsible-disclosure@pingidentity.com
  - url: 'https://www.pingidentity.com/en/resources/downloads/pingfederate.html'
    label: responsible-disclosure@pingidentity.com
tags:
  - nvd
epss: 0.00277
epssPercentile: 0.18213
ingestedAt: '2026-09-30T23:29:32.454Z'
---

## Overview

Unexpected authentication form rendering in HTML Form Adapter using only non-default redirectless mode in PingFederate allows authentication attempts which may enable brute force login attacks.

## Remediation

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