---
title: "CVE-2026-57149: Plone plone.app.portlets.portlets - Server-Side Template Injection"
description: "Plone plone.app.portlets.portlets 5.0.0 to <5.0.8, <6.0.4, and <7.0.2 contains a code execution vulnerability caused by unsafe evaluation of user-supplied TALES expressions in the Classic portlet template, letting authenticated users execute arbitrary code, exploit requires ability to add or edit Classic portlets."
url: https://panop.io/threat-heartbeat/CVE-2026-57149/
---

# CVE-2026-57149 Plone plone.app.portlets.portlets - Server-Side Template Injection

Plone plone.app.portlets.portlets 5.0.0 to <5.0.8, <6.0.4, and <7.0.2 contains a code execution vulnerability caused by unsafe evaluation of user-supplied TALES expressions in the Classic portlet template, letting authenticated users execute arbitrary code, exploit requires ability to add or edit Classic portlets.

CVSS base score 9.9 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.64% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-57149)

## Details

Type

Server-Side Template Injection

Impact

Remote Code Execution, Privilege Escalation

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Published

22 September 2026

Updated

15 October 2026

Weakness

[CWE-95](https://cwe.mitre.org/data/definitions/95.html)

## Vendor fix

Update to plone.app.portlets versions 5.0.8, 6.0.4, or 7.0.2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-57149](https://nvd.nist.gov/vuln/detail/CVE-2026-57149)
- [https://github.com/plone/plone.app.portlets/security/advisories/GHSA-rr49-f9g6-c9r5](https://github.com/plone/plone.app.portlets/security/advisories/GHSA-rr49-f9g6-c9r5)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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