Denial of Service Vulnerability in Plone Content Management System
CVE-2026-57576

6.5MEDIUM

Key Information:

Vendor

Plone

Status
Plone.app.dexterity
Plone.app.contenttypes
Vendor
CVE Published:
22 September 2026

What is CVE-2026-57576?

The vulnerability in plone.app.dexterity and plone.app.contenttypes affects users of the Plone content management system, allowing authenticated users to generate content with excessively long titles, descriptions, or file names. This can lead to a denial of service, rendering the Plone instance unresponsive and complicating content management tasks. It is essential for users and administrators to upgrade to the patched versions to maintain system functionality and security.

Affected Version(s)

plone.app.contenttypes = 5.0.0 = 5.0.0

plone.app.contenttypes >= 4.0.0, < 4.0.10 < 4.0.0, 4.0.10

plone.app.contenttypes < 3.0.12 < 3.0.12

References

https://github.com/plone/plone.app.dexterity/security/adv...
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https://github.com/plone/plone.app.contenttypes/security/...
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https://github.com/plone/plone.app.contenttypes/commit/13...
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CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.