CVE-2023-44389Network attack vector

Stored cross-site scripting via unquoted breadcrumb title

Published Oct 4, 2023 · Updated Nov 27, 2024

Stored XSS in Zope 4.0.0 through 4.8.10 and 5.0.0 through 5.8.5 allows remote authenticated users to run scripts via object titles. src/App/dtml/manage_tabs.dtml inserts title_or_id() into a breadcrumb CSS class without html_quote, causing a stored title to be interpreted as markup. ZMI access is Manager-only by default, and execution requires a Manager to view the object; that browser session's data and authorized actions can be exposed or altered.

CVSS severity4.8
Medium
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored XSS in Zope 4.0.0 through 4.8.10 and 5.0.0 through 5.8.5 allows remote authenticated users to run scripts via object titles. src/App/dtml/manage_tabs.dtml inserts title_or_id() into a breadcrumb CSS class without html_quote, causing a stored title to be interpreted as markup. ZMI access is Manager-only by default, and execution requires a Manager to view the object; that browser session's data and authorized actions can be exposed or altered.

The record

CVE
CVE-2023-44389
Published
Oct 4, 2023
Updated
Nov 27, 2024
Vendor
Zope Foundation
Product
Zope
Classifications
CWE-79, T1203
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Oct 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Nov 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 4.0.0, < 4.8.11
  2. Affected versionversion=>= 5.0.0, < 5.8.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

Zope Foundation · Zopeversion=>= 4.0.0, < 4.8.11; version=>= 5.0.0, < 5.8.6

Published CVSS scores

4.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N
3.1GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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