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Medium

Zope Server vulnerable to DoS via header injection

  • Disclosed: 30.04.2022
  • Updated: 11.10.2026 13:17

Zope is a Web application server for Linux. Zope versions 2.0 through 2.5.1 b1 are vulnerable to a denial of service attack, caused by a vulnerability that occurs when using the "through the Web code" capability. A remote attacker could inject malicious headers into a response to cause the vulnerable system to crash.

Affected software

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PlatformPackageVulnerable versionsFixed in
Python (PyPI) zope >= 2.0.0, < 2.4.4b2, >= 2.5.0, < 2.5.1b2 2.4.4b2, 2.5.1b2

References

CVSS score -
Weakness (CWE)
CWE-400
Platform
Python (PyPI)
Package
zope
Disclosed
30.04.2022
Updated
11.10.2026 13:17

Sources and licenses

OSV / GitHub Advisory Database - PYSEC-2026-761 - PyPA Advisory Database; CC BY 4.0

OSV / GitHub Advisory Database - GHSA-vwrc-g9q6-f675 - CC BY 4.0

Vulnerability history: zope

All published vulnerabilities of this package (Python (PyPI)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (17) in the archive
Total entries
17
First → latest
05.2021 11.2024
Without a fix
4
Exploited in attacks
0

Severity breakdown

  • Critical 1
  • High 8
  • Medium 6
  • Low 2

Disclosures per year

Severity:
  1. Access control vulnerable to user data deletion by anonynmous users
    Critical · 9.1 CVE-2024-51734 < 5.11.1 5.11.1
  2. Zope Server vulnerable to DoS via header injection this entry
    Medium CVE-2002-0687 >= 2.0.0, < 2.4.4b2, >= 2.5.0, < 2.5.1b2 2.4.4b2, 2.5.1b2
  3. ZCatalog plug-in for Zope allows anonymous users to bypass access restrictions
    High CVE-2002-0688 >= 2.4.0, < 2.6.0 2.6.0
  4. Zope does not properly verify the access for objects with proxy roles
    High CVE-2002-0170 >= 2.2.0, < 2.4.4, >= 2.5.0, < 2.5.1 2.4.4, 2.5.1
  5. Zope does not properly perform security registration for legacy names
    High CVE-2000-1211 >= 2.2.0, <= 2.2.4 no fix
  6. Zope does not properly restrict access to the getRoles method
    High CVE-2000-0725 < 2.2.1 2.2.1
  7. Zope DTML implementation Improper Authentication
    High CVE-2000-0062 >= 2.2.0, <= 2.2.4 no fix
  8. Zope is an open-source web application server. Zope versions prior to versions 4.6.3 and 5.3 have a remote code execution security issue. In order to be affected, one must use Python 3 for one's Zope
    High · 7.5 CVE-2021-32811 >= 4.0, < 4.6.3, >= 5.0, < 5.3 4.6.3, 5.3
  9. Zope is an open-source web application server. This advisory extends the previous advisory at https://github.com/zopefoundation/Zope/security/advisories/GHSA-5pr9-v234-jw36 with additional cases of TA
    High · 8.8 CVE-2021-32674 >= 4.0, < 4.6.1, >= 5.0, < 5.2.1 4.6.1, 5.2.1
  10. Zope is an open-source web application server. In Zope versions prior to 4.6 and 5.2, users can access untrusted modules indirectly through Python modules that are available for direct use. By default
    High · 8.8 CVE-2021-32633 < 4.6, >= 5.0, < 5.2 4.6, 5.2

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