PYSEC-2026-761

    Dashboard / Vulnerabilities / PYSEC-2026-761

    PYSEC-2026-761

    Published: 2 Jul 2026Last Modified: 6 Jul 2026

    Summary: Zope Server vulnerable to DoS via header injection

    Details: 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.

    References: https://nvd.nist.gov/vuln/detail/CVE-2002-0687, https://marc.info/?l=zope-announce&m=101890177815066&w=2, https://marc.info/?l=zope-announce&m=101897461507941&w=2, https://marc.info/?l=zope-announce&m=101897462107967&w=2, https://web.archive.org/web/20020822024423/http://www.iss.net/security_center/static/9621.php, https://web.archive.org/web/20021018100409/http://online.securityfocus.com/bid/5813, http://www.redhat.com/support/errata/RHSA-2002-060.html, http://www.zope.org/Products/Zope/Hotfix_2002-04-15/security_alert, https://pypi.org/project/zope, https://github.com/advisories/GHSA-vwrc-g9q6-f675

    Affected packages

    Package

    Name: zope

    Purl: pkg:pypi/zope

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 2.0.0
    Fixed -2.4.4b2

    Affected versions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    PYSEC-2026-761 | CVE-DB