---
id: CVE-2025-8030
title: >-
  Insufficient escaping in the “Copy as cURL” feature could potentially be used
  to trick a user into executing unexpected code
summary: >-
  Insufficient escaping in the “Copy as cURL” feature could potentially be used
  to trick a user into executing unexpected code. This vulnerability was fixed
  in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141,
  Thunderbir…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N'
cwe:
  - CWE-94
vendor: mozilla
product: firefox
affected:
  - firefox < 128.13.0
  - firefox < 141.0
  - 'firefox >= 140.0, < 140.1.0'
  - thunderbird < 128.13.0
  - thunderbird < 141.0
  - 'thunderbird >= 140.0, < 140.1.0'
patched:
  - firefox 140.1.0
  - thunderbird 140.1.0
published: '2025-07-22'
updated: '2026-09-30'
sourceUpdated: '2026-09-30T18:10:00.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-8030'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1968414'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-56/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-58/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-59/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-61/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-62/'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2025-63/'
    label: security@mozilla.org
  - url: 'https://lists.debian.org/debian-lts-announce/2025/07/msg00016.html'
    label: af854a3a-2127-422b-91ae-364da2661108
tags:
  - nvd
epss: 0.0033
epssPercentile: 0.23668
ingestedAt: '2026-09-30T18:17:24.447Z'
---

## Overview

Insufficient escaping in the “Copy as cURL” feature could potentially be used to trick a user into executing unexpected code. This vulnerability was fixed in Firefox 141, Firefox ESR 128.13, Firefox ESR 140.1, Thunderbird 141, Thunderbird 128.13, and Thunderbird 140.1.

## Affected

- `firefox < 128.13.0`
- `firefox < 141.0`
- `firefox >= 140.0, < 140.1.0`
- `thunderbird < 128.13.0`
- `thunderbird < 141.0`
- `thunderbird >= 140.0, < 140.1.0`

## Remediation

Upgrade past the affected range:

- `firefox 140.1.0`
- `thunderbird 140.1.0`