---
id: CVE-2026-82546
title: >-
  Improper Neutralization of Input During Web Page Generation ('Cross-site
  Scripting') in Apache Roller 6.1.5 allows an unauthenticated remote attacker
  to store a crafted comment-author URL through the incoming Trackback endpoint
  when a pu…
summary: >-
  Improper Neutralization of Input During Web Page Generation ('Cross-site
  Scripting') in Apache Roller 6.1.5 allows an unauthenticated remote attacker
  to store a crafted comment-author URL through the incoming Trackback endpoint
  when a pu…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
vendor: Apache Software Foundation
product: Apache Roller
affected:
  - apache_roller 6.1.5
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T09:17:07.037'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-82546'
references:
  - url: 'https://github.com/apache/roller/pull/178'
    label: security@apache.org
  - url: 'https://lists.apache.org/thread/ddrykzvs67zpmzwsbqyfjmlydboln8x1'
    label: security@apache.org
  - url: 'http://www.openwall.com/lists/oss-security/2026/09/25/21'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-28T08:05:44.642Z'
---

## Overview

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in Apache Roller 6.1.5 allows an unauthenticated remote attacker to store a crafted comment-author URL through the incoming Trackback endpoint when a published entry accepts comments and Trackbacks. The shipped Trackback, verification and moderation defaults allow the value to be approved and rendered as an active link; a visitor who clicks the link executes script in the weblog's origin. Users are recommended to upgrade to Apache Roller 6.1.6 or later, which removes incoming Trackback support and suppresses non-HTTP(S) comment-author links. Users unable to upgrade should disable Trackbacks and remove untrusted Trackback comments.

## Remediation

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