EUVD-2026-49248
GHSA-69fv-cwpj-w5qj
Severity by source
AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L
Contributor privileges required and victim must interact, leading to changed scope with low impacts.
Primary rating from Vendor (Patchstack).
CVSS VectorVendor: Patchstack
Lifecycle Timeline
1DescriptionCVE.org
Contributor Cross Site Scripting (XSS) in Gallery PhotoBlocks <= 1.3.3 versions.
AnalysisAI
Cross-site scripting (XSS) in the Gallery Photoblocks WordPress plugin through version 1.3.3 allows authenticated contributors to inject web scripts. An attacker with contributor-level access can craft a malicious input that executes in the browser of a victim who views the affected gallery page. No active exploitation or public exploit code has been reported at this time.
Technical ContextAI
The vulnerability resides in the Gallery Photoblocks plugin (CPE cpe:2.3:a:wp_chill:gallery_photoblocks:*), which provides a grid gallery builder for WordPress. The root cause is improper neutralization of user input during web page generation, classified as CWE-79 (Cross-site Scripting). Input from users with the Contributor role is not sufficiently sanitized before being output on gallery pages, allowing stored or reflected XSS.
RemediationAI
Upgrade Gallery Photoblocks to a version newer than 1.3.3 as soon as a patched release becomes available. The Patchstack advisory suggests that a fix is being addressed; monitor the plugin's official update channel. In the interim, consider restricting contributor access to trusted users only or disabling the gallery interface for contributors if feasible. Note that removing the plugin entirely may affect existing gallery content.
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External POC / Exploit Code
Leaving vuln.today