PYSEC-2026-734

    Dashboard / Vulnerabilities / PYSEC-2026-734

    PYSEC-2026-734

    Published: 2 Jul 2026Last Modified: 6 Jul 2026

    Summary: Plone CMS Improper Session Management

    Details: Plone CMS before 3 places a base64 encoded form of the username and password in the `__ac` cookie for all user accounts, which makes it easier for remote attackers to obtain access by sniffing the network.

    References: https://nvd.nist.gov/vuln/detail/CVE-2008-1394, https://exchange.xforce.ibmcloud.com/vulnerabilities/41425, https://github.com/plone/Plone, http://plone.org/about/security/overview/security-overview-of-plone, http://securityreason.com/securityalert/3754, http://www.procheckup.com/Hacking_Plone_CMS.pdf, http://www.securityfocus.com/archive/1/489544/100/0/threaded, https://pypi.org/project/plone, https://github.com/advisories/GHSA-mq3q-jjph-rp5p

    Affected packages

    Package

    Name: plone

    Purl: pkg:pypi/plone

    Affected ranges

    Type: ECOSYSTEM

    Events:

    Introduced- 0
    Fixed -3.0

    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-2026-734 | CVE-DB