---
id: CVE-2026-18320
title: >-
  Readwise Reader for Android uses a sanitize-html configuration that permits
  all attributes on SVG and PATH elements due to a wildcard attribute rule
summary: >-
  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.…
severity: medium
cvss: 6.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'
cwe:
  - CWE-79
  - CWE-625
vendor: Readwise
product: Reader
affected:
  - Reader >= 8.7.2 < 8.10.1
published: '2026-09-25'
updated: '2026-09-25'
sourceUpdated: '2026-09-25T17:17:08.013'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-18320'
references:
  - url: 'https://kb.cert.org/vuls/id/699627'
    label: cret@cert.org
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-25T16:56:55.358504Z'
ingestedAt: '2026-09-25T17:13:14.012Z'
---

## Overview

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).

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.