---
id: CVE-2025-65203
title: >-
  KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials
  into documents rendered under a browser-enforced CSP directive and iframe
  attribute sandbox, allowing attacker-controlled script in the sandboxed
  document to …
summary: >-
  KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials
  into documents rendered under a browser-enforced CSP directive and iframe
  attribute sandbox, allowing attacker-controlled script in the sandboxed
  document to …
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N'
cwe:
  - CWE-352
  - CWE-353
  - CWE-640
vendor: keepassxc
product: keepassxc-browser
affected:
  - keepassxc-browser <= 1.9.9.2
published: '2025-12-17'
updated: '2026-10-13'
sourceUpdated: '2026-10-13T11:10:00.203'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-65203'
references:
  - url: 'https://github.com/keepassxreboot/keepassxc-browser/issues/2647'
    label: cve@mitre.org
  - url: 'https://github.com/keepassxreboot/keepassxc-browser/pull/2648'
    label: cve@mitre.org
tags:
  - nvd
epss: 0.00137
epssPercentile: 0.02697
ingestedAt: '2026-10-13T11:23:51.120Z'
---

## Overview

KeePassXC-Browser thru 1.9.9.2 autofills or prompts to fill stored credentials into documents rendered under a browser-enforced CSP directive and iframe attribute sandbox, allowing attacker-controlled script in the sandboxed document to access populated form fields and exfiltrate credentials.

## Affected

- `keepassxc-browser <= 1.9.9.2`

## Remediation

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