---
id: CVE-2011-1340
aliases:
  - GHSA-cvwc-g7fw-7xrj
  - PYSEC-2026-896
title: Plone XSS Vulnerability
summary: Plone XSS Vulnerability
severity: medium
vendor: plone
product: plone
ecosystem: pip
affected:
  - plone < 2.5.3
patched:
  - plone 2.5.3
published: '2022-05-17'
updated: '2026-07-07'
source: OSV
sourceUrl: 'https://osv.dev/vulnerability/GHSA-cvwc-g7fw-7xrj'
references:
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2011-1340'
  - url: >-
      https://web.archive.org/web/20110816092954/http://dev.plone.org/plone/changeset/12262
  - url: >-
      https://web.archive.org/web/20110817133423/https://dev.plone.org/plone/ticket/6110
  - url: 'http://jvn.jp/en/jp/JVN41222793/index.html'
  - url: 'http://jvndb.jvn.jp/jvndb/JVNDB-2011-000056'
tags:
  - osv
  - pip
epss: 0.01153
epssPercentile: 0.65097
ingestedAt: '2026-07-08T18:25:48.589Z'
---

## Overview

Cross-site scripting (XSS) vulnerability in `skins/plone_templates/default_error_message.pt` in Plone before 2.5.3 allows remote attackers to inject arbitrary web script or HTML via the type_name parameter to `Members/ipa/createObject`.

## Affected packages

- `plone < 2.5.3`

## Remediation

Upgrade to a patched release:

- `plone 2.5.3`