All vulnerabilities
CVE-2026-57576GHSA-5426-92w4-wvhvGHSA-8pcw-h6w9-h46gPYSEC-2026-4137

plone.app.dexterity has a Denial of Service due to excessive title or description length

plone plone.app.dexteritypipLibraries & packages
Open in ThreatlineRecord JSON
CVSS
6.5Medium
ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.76%Chance of exploitation activity in the next 30 days, higher than 54% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed in5.0.1Also 4.1.3, 3.2.3GitHub
Published22 Sep 2026Updated 1 Oct 2026CVE List

What fixes it

  • 5.0.1plone.app.dexterity, pipGitHub
  • 4.1.3plone.app.dexterity, pipGitHub
  • 3.2.3plone.app.dexterity, pipGitHub
  • 5.0.1plone-app-dexterity, PyPIOSVpip install "plone-app-dexterity>=5.0.1"
  • 4.1.3plone-app-dexterity, PyPIOSVpip install "plone-app-dexterity>=4.1.3"
  • 3.2.3plone-app-dexterity, PyPIOSVpip install "plone-app-dexterity>=3.2.3"

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

Description

Impact

When creating content with a very large title or description field, Plone can become unresponsive. Even if the content loads, it can be hard to edit or delete, because the UI is unwieldy.

Patches

The problem has been patched in plone.app.dexterity.

  • On Plone 6.2, upgrade to plone.app.dexterity 5.0.1.
  • On Plone 6.1, upgrade to plone.app.dexterity 4.1.3.
  • On Plone 6.0, upgrade to plone.app.dexterity 3.2.3.

Another part of this problem has been patched in plone.app.contenttypes. See this advisory.

Workarounds

There are no known workarounds.

This problem was responsibly reported by Aldin Visnjic to the [Plone/Zope Security Team](mailto:security@plone.org). Thank you!

Note: The Plone/Zope Security team felt that the kind of fixes that were needed could be disruptive in corner cases if they were not careful. So they decided to develop the fixes publicly, giving the whole community the chance the review, and giving them the benefit from early feedback.

Text from GitHub Advisory Database

Affected versions 72

  • plone.app.dexterity, pip= 5.0.0GitHub
  • plone.app.dexterity, pip>= 4.0.0, <= 4.1.2GitHub
  • plone.app.dexterity, pip<= 3.2.2GitHub
  • plone.app.dexterityaffected: = 5.0.0CVE List
  • plone.app.dexterityaffected: >= 4.0.0, < 4.1.3CVE List
  • plone.app.dexterityaffected: < 3.2.3CVE List
  • plone.app.contenttypesaffected: = 5.0.0CVE List
  • plone.app.contenttypesaffected: >= 4.0.0, < 4.0.10CVE List
  • plone.app.contenttypesaffected: < 3.0.12CVE List
  • plone-app-dexterity, PyPIfrom 5.0.0, fixed in 5.0.1OSV
  • plone-app-dexterity, PyPI5.0.0OSV
  • plone-app-dexterity, PyPIfrom 4.0.0, fixed in 4.1.3OSV
  • plone-app-dexterity, PyPI4.0.0OSV
  • plone-app-dexterity, PyPI4.0.1OSV
  • plone-app-dexterity, PyPI4.0.2OSV
  • plone-app-dexterity, PyPI4.0.3OSV
  • plone-app-dexterity, PyPI4.0.4OSV
  • plone-app-dexterity, PyPI4.0.5OSV
  • plone-app-dexterity, PyPI4.1.0OSV
  • plone-app-dexterity, PyPI4.1.1OSV
  • plone-app-dexterity, PyPI4.1.2OSV
  • plone-app-dexterity, PyPIfrom first release, fixed in 3.2.3OSV
  • plone-app-dexterity, PyPI1.0OSV
  • plone-app-dexterity, PyPI1.0.1OSV
  • plone-app-dexterity, PyPI1.0.2OSV
  • plone-app-dexterity, PyPI1.0.3OSV
  • plone-app-dexterity, PyPI1.0a1OSV
  • plone-app-dexterity, PyPI1.0a2OSV
  • plone-app-dexterity, PyPI1.0a3OSV
  • plone-app-dexterity, PyPI1.0a4OSV
  • plone-app-dexterity, PyPI1.0a5OSV
  • plone-app-dexterity, PyPI1.0a6OSV
  • plone-app-dexterity, PyPI1.0a7OSV
  • plone-app-dexterity, PyPI1.0b1OSV
  • plone-app-dexterity, PyPI1.0b2OSV
  • plone-app-dexterity, PyPI1.0b3OSV
  • plone-app-dexterity, PyPI1.0b4OSV
  • plone-app-dexterity, PyPI1.0rc1OSV
  • plone-app-dexterity, PyPI1.1OSV
  • plone-app-dexterity, PyPI1.2OSV
  • plone-app-dexterity, PyPI1.2.1OSV
  • plone-app-dexterity, PyPI1.2.2OSV
  • plone-app-dexterity, PyPI2.0OSV
  • plone-app-dexterity, PyPI2.0.1OSV
  • plone-app-dexterity, PyPI2.0.10OSV
  • plone-app-dexterity, PyPI2.0.11OSV
  • plone-app-dexterity, PyPI2.0.12OSV
  • plone-app-dexterity, PyPI2.0.13OSV
  • plone-app-dexterity, PyPI2.0.14OSV
  • plone-app-dexterity, PyPI2.0.15OSV
  • plone-app-dexterity, PyPI2.0.16OSV
  • plone-app-dexterity, PyPI2.0.17OSV
  • plone-app-dexterity, PyPI2.0.18OSV
  • plone-app-dexterity, PyPI2.0.19OSV
  • plone-app-dexterity, PyPI2.0.2OSV
  • plone-app-dexterity, PyPI2.0.3OSV
  • plone-app-dexterity, PyPI2.0.4OSV
  • plone-app-dexterity, PyPI2.0.5OSV
  • plone-app-dexterity, PyPI2.0.6OSV
  • plone-app-dexterity, PyPI2.0.7OSV
  • plone-app-dexterity, PyPI2.0.8OSV
  • plone-app-dexterity, PyPI2.0.9OSV
  • plone-app-dexterity, PyPI2.1.0OSV
  • plone-app-dexterity, PyPI2.1.1OSV
  • plone-app-dexterity, PyPI2.1.10OSV
  • plone-app-dexterity, PyPI2.1.11OSV
  • plone-app-dexterity, PyPI2.1.12OSV
  • plone-app-dexterity, PyPI2.1.13OSV
  • plone-app-dexterity, PyPI2.1.14OSV
  • plone-app-dexterity, PyPI2.1.15OSV
  • plone-app-dexterity, PyPI2.1.16OSV
  • plone-app-dexterity, PyPI2.1.17OSV

References 19