What is CVE-2026-57576?

CVE-2026-57576 is a medium-severity vulnerability in Plone Plone.app.contenttypes, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-22.

How severe is CVE-2026-57576?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in Plone Plone.app.contenttypes

CVE-2026-57576

plone.app.dexterity is a content-type system for the Plone content management system, and plone.app.contenttypes provides Plone’s Dexterity-based content types. Plone.app.dexterity versions through 3.2.2, 4.0.0 through 4.1.2, and 5.0.0, and plone.app.contenttypes versions through 3.0.11, 4.0.0 through 4.0.9, and 5.0.0 are vulnerable to denial of service because an authenticated user can create content with excessively long titles, descriptions, or uploaded-file names, causing Plone to become unresponsive and potentially making the resulting content difficult to edit or delete. The vulnerability is patched in plone.app.dexterity versions 3.2.3, 4.1.3, and 5.0.1, and in plone.app.contenttypes versions 3.0.12, 4.0.10, and 5.0.1.

Vulnerability class: DoS (Denial of Service)

Published 2026-09-22.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Plone Plone.app.contenttypes — versions < 3.0.12, = 5.0.0, >= 4.0.0, < 4.0.10
Plone Plone.app.dexterity — versions < 3.2.3, = 5.0.0, >= 4.0.0, < 4.1.3

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

Frequently asked questions

What is CVE-2026-57576?: CVE-2026-57576 is a medium-severity vulnerability in Plone Plone.app.contenttypes, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2026-09-22.
How severe is CVE-2026-57576?: Medium severity. CVSS v3 base score is 6.5 out of 10.