Summary
ZendFramework Potential Cross-site Scripting in Development Environment Error View Script
The default error handling view script generated using Zend_Tool failed to escape request parameters when run in the "development" configuration environment, providing a potential XSS attack vector.
Zend_Tool_Project_Context_Zf_ViewScriptFile was patched such that the view script template now calls the escape() method on dumped request variables.
Zend Framework 1.11.4 includes a patch that adds escaping to the generated error/error.phtml view script, ensuring that request variables are escaped appropriately for the browser.
Do note, however, that this will not update any previously generated code. You will still need to follow the next advice for previously generated error view scripts.
Impact
Untrusted input is rendered as active markup in a victim's browser, which can run script in their session. Typical impact: session or credential theft, and actions taken as the user.
GHSA-G52P-86J5-XR8Q has a CVSS score of 6.1 (Medium). The vector is network-reachable, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.11.4); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
Already deployed Kodem?
See it in your environmentNew to Kodem? Get a demo →Remediation advice
Kodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
Frequently Asked Questions
- What is GHSA-G52P-86J5-XR8Q? GHSA-G52P-86J5-XR8Q is a medium-severity cross-site scripting (XSS) vulnerability in zendframework/zendframework1 (composer), affecting versions >= 1.0.0, < 1.11.4. It is fixed in 1.11.4. Untrusted input is rendered as active markup in a victim's browser, which can run script in their session.
- How severe is GHSA-G52P-86J5-XR8Q? GHSA-G52P-86J5-XR8Q has a CVSS score of 6.1 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
- Which versions of zendframework/zendframework1 are affected by GHSA-G52P-86J5-XR8Q? zendframework/zendframework1 (composer) versions >= 1.0.0, < 1.11.4 is affected.
- Is there a fix for GHSA-G52P-86J5-XR8Q? Yes. GHSA-G52P-86J5-XR8Q is fixed in 1.11.4. Upgrade to this version or later.
- Is GHSA-G52P-86J5-XR8Q exploitable, and should I be worried? Whether GHSA-G52P-86J5-XR8Q is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
- What actually determines whether GHSA-G52P-86J5-XR8Q is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
- How do I fix GHSA-G52P-86J5-XR8Q? Upgrade
zendframework/zendframework1to 1.11.4 or later.