7.5

CVE-2023-36814: zopefoundation's Products.CMFCore vulnerable to unauthenticated denial of service and crash via unchecked use of input with Python's marshal module

Modified
AliasesGHSA-4hpj-8rhv-9x87PYSEC-2023-113
Published 03-07-2023Last modified 22-11-2024

Vulnerability summary

CVE-2023-36814 is a high (CVSS 7.5) vulnerability in zope products.cmfcore. EPSS estimates a 0.72% chance of exploitation in the next 30 days, higher than 54% of scored vulnerabilities.

Priority
Prioritisesevere

Severe, CVSS 7.5 (CVE.org); no exploitation reported by the 5 checked sources; EPSS 1% (FIRST, 03-11-2026)

Source freshness unavailable

How is this decided?
CVSS score
7.5/10
010
High · v3.1 (CVE.org)
EPSS score
0.72%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 03-07-2023
    PublishedVulnerability first disclosed.
  2. 22-11-2024
    Last modifiedVulnerability information updated.

Description

Products.CMFCore are the key framework services for the Zope Content Management Framework (CMF). The use of Python's marshal module to handle unchecked input in a public method on `PortalFolder` objects can lead to an unauthenticated denial of service and crash situation. The code in question is exposed by all portal software built on top of `Products.CMFCore`, such as Plone. All deployments are vulnerable. The code has been fixed in `Products.CMFCore` version 3.2.

CVSS metrics

4 scores · 3 sources · 2 versions

EPSS trend

Probability

0.72%

Chance of exploitation in the next 30 days

Percentile

54%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.72% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, no authentication, no user interaction (CVSS vector). Other conditions: not stated in public data.

PyPI1 product
  • products-cmfcore≥ 3.0, < 3.2 | < 2.7.1 | < 40f03f43a60f28ca9485c8ef429efef729be54e5 | < 3.2
Zope1 product
Zopefoundation1 product

3 vendors · 3 products

References

6 links