Grid Gallery – Photo Image Grid Gallery <= 1.2.4 - Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 1.2.5
- Affected Plugin
- Grid Gallery – for Photo Gallery, Image Gallery & Portfolio
- Affected Version
< 1.2.5- CVSS
- 5.4Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24529
At a glance
CVE-2021-24529 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Grid Gallery WordPress plugin, affecting versions < 1.2.5. It carries a CVSS score of 5.4 (reachable over the network; low attack complexity). The issue is fixed in version 1.2.5; sites on affected versions should update now. Disclosed July 2021, reported by Amal E Thamban.
Vulnerability Overview
The Grid Gallery – Photo Image Grid Gallery WordPress plugin before 1.2.5 does not properly sanitize the title field for image galleries when adding them via the admin dashboard, resulting in an authenticated Stored Cross-Site Scripting vulnerability.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Grid Gallery < 1.2.5 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Grid Gallery the fix is 1.2.5: builds < 1.2.5 are affected, anything from 1.2.5 onward is not.
Remediation
Update to version 1.2.5, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Grid Gallery: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Grid Gallery 1.2.5 closes this, and updating the plugin is the step that ends it.
- Firewall
- Alerts
External References
Related records
Other vulnerabilities in Grid Gallery – for Photo Gallery, Image Gallery & Portfolio
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