CVE-2010-1104 in Zope
Summary
by MITRE
Cross-site scripting (XSS) vulnerability in Zope 2.8.x before 2.8.12, 2.9.x before 2.9.12, 2.10.x before 2.10.11, 2.11.x before 2.11.6, and 2.12.x before 2.12.3 allows remote attackers to inject arbitrary web script or HTML via vectors related to error messages.
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Analysis
by VulDB Data Team • 05/03/2026
The vulnerability described in CVE-2010-1104 represents a critical cross-site scripting flaw affecting multiple versions of the Zope application server platform. This vulnerability specifically impacts Zope versions 2.8.x prior to 2.8.12, 2.9.x prior to 2.9.12, 2.10.x prior to 2.10.11, 2.11.x prior to 2.11.6, and 2.12.x prior to 2.12.3, creating a widespread security risk across numerous deployments of this enterprise content management system. The flaw resides in how the application handles error messages, making it particularly dangerous as it can be exploited through legitimate error reporting mechanisms that users might encounter during normal operation.
The technical implementation of this vulnerability stems from inadequate input validation and output encoding within Zope's error handling subsystem. When the application encounters an error condition, it generates error messages that are subsequently displayed to users without proper sanitization of potentially malicious input data. Attackers can craft specially crafted input that, when processed by the application and subsequently rendered in error messages, executes arbitrary JavaScript code within the victim's browser context. This occurs because the system fails to properly escape or encode special characters that have significance in HTML and JavaScript contexts, allowing attackers to inject malicious scripts that persist in the error message output.
The operational impact of this vulnerability extends far beyond simple data theft or defacement. An attacker exploiting this XSS flaw can execute arbitrary code in the context of a victim's browser session, potentially leading to session hijacking, credential theft, or redirection to malicious websites. The vulnerability is particularly concerning because it operates through error messages, which are typically expected to be benign and informative rather than attack vectors. This means that legitimate users encountering error conditions could unknowingly become victims of attacks, making the exploitation more subtle and harder to detect. The broad range of affected versions suggests that this vulnerability was present for an extended period, potentially leaving many organizations exposed to persistent threats.
Organizations should prioritize immediate patching of all affected Zope versions to remediate this vulnerability. The recommended mitigation strategy involves upgrading to the patched versions mentioned in the CVE details, specifically ensuring that all instances are updated to versions 2.8.12, 2.9.12, 2.10.11, 2.11.6, and 2.12.3 respectively. Additionally, implementing proper input validation and output encoding practices at the application level can provide defense-in-depth measures. Organizations should also consider implementing content security policies to limit the execution of inline scripts and monitor for suspicious error message patterns that might indicate exploitation attempts. From a cybersecurity perspective, this vulnerability aligns with CWE-79, which describes cross-site scripting flaws, and represents a common attack vector categorized under the ATT&CK technique T1059.007 for scripting languages, demonstrating how seemingly innocuous application functionality can become a critical security weakness when proper sanitization controls are absent.