CVE-2025-6428 — Open Redirect in Mozilla Firefox

CWE-601 — Open Redirect7 documents7 sources
Severity
4.3MEDIUMNVD
EPSS
0.1%
top 80.64%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
1
Mozilla Firefox
Timeline
PublishedJun 24
Latest updateJun 26

Description

When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to phishing attacks. *This bug only affects Firefox for Android. Other versions of Firefox are unaffected.*. This vulnerability was fixed in Firefox 140.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:NExploitability: 2.8 | Impact: 1.4

Affected Packages1 packages

▶NVDmozilla/firefox< 140.0

🔴Vulnerability Details

3
GHSA
GHSA-34r6-q8c8-23mx: When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to↗2025-06-26
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OSV
CVE-2025-6428: When a URL was provided in a link querystring parameter, Firefox for Android would follow that URL instead of the correct URL, potentially leading to↗2025-06-24
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CVEList
Firefox for Android opened URLs specified in a link querystring parameter↗2025-06-24
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📋Vendor Advisories

3
Red Hat
firefox: Firefox for Android opened URLs specified in a link querystring parameter↗2025-06-24
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Debian
CVE-2025-6428: firefox - When a URL was provided in a link querystring parameter, Firefox for Android wou...↗2025
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Mozilla
Mozilla Foundation Security Advisory 2025-51: CVE-2025-6428↗
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CVE-2025-6428 — Open Redirect in Mozilla Firefox | cvebase