Signal is active with 2 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
SVGO, short for SVG Optimizer, is a Node.js library and command-line application for optimizing SVG files. From version 1.0.0 until versions 2.8.4, 3.3.5, and 4.1.0, the opt-in removeScripts plugin, named removeScriptElement in versions 2 and 3, incompletely filters executable links in plugins/removeScripts.js and lib/svgo/tools.js. The plugin does not recognize namespace-prefixed SVG anchor elements such as svg:a with href or namespaced *:href values, and it does not remove ASCII tab, line-feed, or carriage-return characters before checking URL schemes. Browsers remove those characters before parsing a scheme, allowing an executable link to pass the plugin's check. When an application processes attacker-controlled SVG input and serves the result in an active browser context, a victim who activates the surviving link can execute script in the SVG's origin, expose data, modify content, or perform actions as the victim. This issue is fixed in versions 2.8.4, 3.3.5, and 4.1.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
AVAILABLE
Momentum
NONE
🔴 SVGO (SVG Optimizer), Cross-Site Scripting (XSS) Bypass, #CVE-2026-84370 (High) -DC-Sep2026-2267 https://dailycve.com/svgo-svg-optimizer-cross-site-scripting-xss-bypass-cve-2026-84370-high-dc-sep2026-2267/
Post summary
The post announces a high‑severity XSS bypass vulnerability in SVGO (CVE‑2026‑84370) with brief technical details, but provides no PoC, exploit, or patch information.
🚨High - SVGO removeScripts Link Sanitization Bypass XSS (CVE-2026-84370) SVGO’s opt-in removeScripts plugin (removeScriptElement in v2/v3) incompletely filters executable links: namespace-prefixed <a> plus URL schemes with ASCII tab/newline/carriage-return bypass checks. If attacker-controlled SVGs are optimized and served in an active browser context, a victim click triggers SVG-origin XSS. Not affected if removeScripts isn’t enabled. 👉Affected: svgo < 2.8.4, 3.x < 3.3.5, 4.x < 4.1.0 | Upgrade to 2.8.4 / 3.3.5 / 4.1.0
Post summary
High severity XSS vulnerability in SVGO’s removeScripts plugin due to incomplete link sanitization, affecting versions below 2.8.4, 3.3.5, and 4.1.0. Users are advised to upgrade to the specified patch versions.