TI-2026-15069 Aliases CVE-2026-18320 GHSA-v29r-35gc-f5pr

Cross-site scripting in Readwise Reader

LOW 27CWE-79Published 2026-09-25 · Updated 2026-09-25

Key facts

Attack vector: Network
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

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.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).

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00212 11th percentileScored 2026-11-07

Fix Fixed Reader (Readwise): 8.10.1

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Readwise	Reader	8.7.2 to before 8.10.1	8.10.1	Patch available	CNA

Reader VendorReadwise Affected 8.7.2 to before 8.10.1 Fixed in 8.10.1 Patch available CNA

Remediation

Fix · CNA Reader (Readwise) Fixed in 8.10.1

Timeline

2026-10-02 Threatist record created from CVE-2026-18320
2026-10-03 Alias added: GHSA-v29r-35gc-f5pr

References

Other 1

https://kb.cert.org/vuls/id/699627

TI-2026-15064 Cross-site scripting in Readwise Reader CVSS 3.1MEDIUM 6.1
TI-2026-15063 Cross-site scripting in Readwise Reader CVSS 3.1MEDIUM 6.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences