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CVE-2026-18320: CVE-2026-18320
- Severity: medium (CVSS 6.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-09-25 · updated 2026-09-28
- Weakness: CWE-79
Description
Readwise Reader for Android uses a sanitize-html configuration that permits all attributes on SVG and PATH elements due to a wildcard attribute rule. This configuration fails to remove script-capable attributes such as event handlers (e.g., 'onload', 'onerror'). An attacker could supply a document containing malicious SVG content that survives sanitization and executes script wher rendered in the Reader WebView, resulting in client-side cross-site scripting (XSS).
Affected products
- Readwise Reader: from 8.7.2 before 8.10.1 — fixed in 8.10.1
How to fix
Upgrade to a fixed version: Readwise Reader 8.10.1. Check the vendor advisory for mitigations.
In the news
References
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