by Kastro
Paper/Archive/CVE-2026-78997

CVE-2026-78997

mitre — UC Browser for Android (package com.UCMobile.intl, version 13.7.8.1314) contains a Universal Cross-Site Scripting vulnerability that allo…

EPSS 0.4%public exploitCVSS 9.3
critical.is priorityof 100
45
CVSS 9.3 (ADP)9.3 / 10 × 3027.9Not in CISA KEV+300.0EPSS percentile 34.2.342 × 206.8Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

UC Browser for Android (package com.UCMobile.intl, version 13.7.8.1314) contains a Universal Cross-Site Scripting vulnerability that allows an attacker to execute arbitrary JavaScript in the context of any origin. An attacker hosts a specially crafted URL on a UC-owned domain (via a reflected XSS) that leverages the browser's internal JavaScript bridge to register a deferred callback, navigate the tab to a victim site, and then execute attacker-controlled code on that site when a login dialog is dismissed.

Affected

ProductAffectedFixed inSource
n/an/a–CNA

Scores by source

CISA ADP9.3CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgist.github.com/OmriInbar-Novee/9fd65fe08c1b1cff6a19350e44425de2refgist.github.com/OmriInbar-Novee/ef7a92db148b2eb1ab0aa7b99a565c4c