CVE-2026-18320

CVE-2026-18320

Published Sep 25, 2026 CVSS 3.1 · 6.1 Medium EPSS < 1% KEV · Not listed
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).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Readwise
Readwise reader
Vendors & Products Readwise
Readwise reader
Type Values Removed Values Added
Weaknesses CWE-79
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

Type Values Removed Values Added
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).
Title CVE-2026-18320
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
certcc
Published
Updated
Sep 25, 2026, 4:57 PM
Reserved
Jul 29, 2026, 6:50 PM
Status
Deferred
Published
Sep 25, 2026, 5:17 PM
Modified
Sep 28, 2026, 4:31 PM