Tapjacking in Android Custom Tabs using transition animations

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Summary

CVECVE-2025-1939
StatePUBLISHED
Assignermozilla
Source PriorityCVE Program / NVD first with legacy fallback
Published2025-03-04 14:15:38 UTC
Updated2026-04-13 15:16:53 UTC
DescriptionAndroid apps can load web pages using the Custom Tabs feature. This feature supports a transition animation that could have been used to trick a user into granting sensitive permissions by hiding what the user was actually clicking. This vulnerability was fixed in Firefox 136.

Risk And Classification

Primary CVSS: v3.1 3.9 LOW from ADP

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

EPSS: 0.001310000 probability, percentile 0.326530000 (date 2026-04-15)

Problem Types: CWE-359 | CWE-359 CWE-359 Exposure of Private Personal Information to an Unauthorized Actor

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED3.9LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary3.9LOWCVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Mozilla Firefox All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Mozilla Firefox unaffected 136 * rpm Not specified

References

ReferenceSourceLinkTags
bugzilla.mozilla.org/show_bug.cgi [email protected] bugzilla.mozilla.org Issue Tracking
www.mozilla.org/security/advisories/mfsa2025-14 [email protected] www.mozilla.org Vendor Advisory
taptrap.click af854a3a-2127-422b-91ae-364da2661108 taptrap.click Product
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: Philipp Beer (en)

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