Tag
#XSS
Understanding the JupyterLab Image Viewer XSS Vulnerability
This educational analysis covers a critical vulnerability in JupyterLab's image viewer, allowing cross-site scripting (XSS) when a specially-crafted image file is opened and then viewed in a new browser tab. This can lead to remote code execution (RCE) on the JupyterLab server. The vulnerability is addressed in JupyterLab versions 4.6.2 and 4.5.10.
CVE-2026-65048: Critical Unauthenticated Stored XSS in Ninja Forms WordPress Plugin
A critical vulnerability (CVE-2026-65048, CVSS 9.3) exists in the Ninja Forms plugin for WordPress versions 3.10.4 through 3.14.9, allowing unauthenticated stored cross-site scripting (XSS) attacks via the Repeatable Fieldset feature. An attacker can submit a crafted form with malicious script payloads, which execute in an administrator's browser when viewing submissions, enabling session-cookie theft, creation of administrator accounts, and arbitrary modification of site content. Immediate patching is recommended.
CVE-2026-35198: Critical Stored XSS Vulnerability in HeyForm
A critical stored cross-site scripting (XSS) vulnerability exists in HeyForm, an open-source form builder, prior to version 3.0.0-rc.7. A low-privileged team member can inject malicious JavaScript, leading to account takeover through privilege escalation when a team owner views the form. Update to version 3.0.0-rc.7 or later to mitigate.
CVE-2026-9833: Unauthenticated XSS in Tag Groups WordPress Plugin
The CVE-2026-9833 vulnerability is a high-severity (CVSS 7.1) unauthenticated stored cross-site scripting (XSS) flaw in the Tag Groups WordPress plugin prior to version 2.2.0. An attacker can exploit this vulnerability by crafting a link that, when followed by a logged-in user with 'edit_pages' capability (Editor or higher), allows the execution of arbitrary JavaScript in the user's browser. This could lead to unauthorized actions within the WordPress dashboard. Immediate action is recommended to upgrade to version 2.2.0 or later.
Understanding and Defending Against CVE-2026-61876: LuCI DHCPv6 Lease Hostname Injection
CVE-2026-61876 is a high-severity vulnerability in LuCI, a popular open-source interface for OpenWRT routers. The vulnerability allows adjacent network attackers to inject HTML markup into DHCPv6 lease hostnames, potentially leading to XSS attacks. This analysis provides an in-depth look at the vulnerability, its exploitation mechanics, and defensive strategies.
Critical XSS Vulnerability in SiYuan's Bazaar Marketplace (CVE-2026-56397)
A critical vulnerability (CVE-2026-56397) with a CVSS score of 9.6 was discovered in SiYuan's Bazaar marketplace. The vulnerability allows malicious package authors to inject arbitrary HTML and JavaScript into package metadata and README content, leading to remote code execution on users browsing the Bazaar. This affects SiYuan versions before v3.6.1. Immediate patching to v3.6.1 or later is recommended.
Cross-Site Scripting Vulnerability in Flowise Before 3.0.8
A cross-site scripting (XSS) vulnerability exists in Flowise before version 3.0.8, caused by insufficient input filtering in chat messages and custom agent functions. An attacker can inject malicious JavaScript, enabling theft of cookies and session data. Users of Flowise should update to version 3.0.8 or later.
Understanding and Defending Against XSS in Gogs .ipynb Files Renderer
Gogs, a self-hosted Git service, is vulnerable to a cross-site scripting (XSS) attack due to an outdated version of notebookjs used to render Jupyter notebook files (.ipynb). The vulnerability, with a CVSS score of 8.5, allows any user with repository creation rights to craft XSS payloads that can take over a victim's account. This educational analysis will delve into the root cause, attack surface, exploitation mechanics, real-world impact, detection, and defense strategies.