# CVE-2016-7136: Plone CMS cross-site scripting in forms

Source: https://junglewise.ai/threats/cve-2016-7136-plone-cms-cross-site-scripting-in-forms  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2017-03-07. Updated: 2026-09-26  
License: CC BY 4.0 with a link back

CVE-2016-7136 · Severity: low · CVSS 3 · Published 2017-03-07

Plone is a content management system used to build and manage websites and intranets. This vulnerability allows attackers to inject malicious scripts into web forms via specially crafted requests, enabling them to steal user credentials, redirect users to malicious sites, or deface website content when users interact with affected pages.

Technologies: [Plone](https://junglewise.ai/threats/technologies/plone), [plone (PyPI)](https://junglewise.ai/threats/technologies/pypi-plone). Vendors: [Plone](https://junglewise.ai/threats/vendors/plone), [PyPI](https://junglewise.ai/threats/vendors/pypi).

## Quick answers

**Is CVE-2016-7136 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2016-7136 being exploited in the wild.

**How severe is CVE-2016-7136?** Low severity, with a CVSS score of 3, published 7 March 2017.

**Which products and versions are affected?** Plone 4.0.0 through 4.3.11 and 5.0.0 through 5.0.6; plone (PyPI) ECOSYSTEM:introduced=5.0,fixed=5.0.7,introduced=4.2,fixed=4.3.12.

**Is there a fix for CVE-2016-7136?** Yes. plone (PyPI): upgrade to 4.3.12 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2016-7136 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2016-7136?** Check whether you run Plone or plone (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- plone (PyPI): upgrade to 4.3.12 or later

  ```sh
  pip install "plone>=4.3.12"
  ```


## Technical details

The vulnerability is a reflected cross-site scripting (XSS) flaw in the z3c.form component of Plone CMS, classified under CWE-79. It affects versions 4.x through 4.3.11 and 5.x through 5.0.6, and can be triggered by crafting a malicious GET request to the application. The vulnerability requires user interaction—a victim must click on or visit a malicious link—but does not require prior authentication or special privileges. An attacker can execute arbitrary JavaScript in a victim's browser session, potentially compromising session tokens, stealing sensitive data, or performing actions on behalf of the user. A fix was available in a security hotfix released on 2016-08-30.

## Affected products

- Plone Plone 4.0.0 through 4.3.11 and 5.0.0 through 5.0.6

## Identifiers

- CVE-2016-7136
- GHSA-22jm-p2vv-j2hc
- PYSEC-2017-59

## Timeline

- 2016-09: disclosed: Initial public disclosure
- 2022-05-14: advisory: GHSA-22jm-p2vv-j2hc published
- 2016-08-30: patched: Security hotfix released

## References

- [https://github.com/plone/Plone](https://github.com/plone/Plone)

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