CVE-2026-18311CWE-79cross-site-scripting

CVE-2026-18311

Medium · published September 25, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
4.5
In the wild
Unconfirmed
What it is

Readwise Reader for Android contains a cross-site scripting vulnerability due to missing HTML sanitization in its processing of imported document metadata. Attacker-controlled fields such as the author meta tag are inserted into a WebView via innerHTML, enabling stored XSS that executes on synced devices when the malicious document is opened.

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v4.0
Not supplied
EPSS
0.00157 · 4.5th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-09-25T21:17Z
References (1)
https://kb.cert.org/vuls/id/699627 · [email protected]
EPSS history
Timeline
  • 27 SEP 03:25Z
    EPSS moved — → 0%
    epss
  • 25 SEP 16:27Z
    CVE-2026-18311
    cvelistv5