Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:H/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Network delivery requires active user interaction (UI:R); scope changes (S:C) because stolen tokens compromise backend systems beyond the vulnerable app; no integrity or availability impact confirmed.
Primary rating from Vendor (OPPO).
CVSS VectorVendor: OPPO
Lifecycle Timeline
2DescriptionCVE.org
Loading arbitrary external URLs through WebView components introduces malicious JS code that can steal arbitrary user tokens.
AnalysisAI
WebView URL injection in OPPO Health 6.2.9 enables token theft when a victim interacts with a maliciously crafted URL that loads inside the application's embedded WebView component. The CVSS 4.0 score of 8.3 reflects network-based delivery with low attack complexity, no required privileges, but mandatory active user interaction, with high confidentiality impact on both the vulnerable and subsequent systems. No public exploit code has been identified at time of analysis, and this CVE does not appear in the CISA KEV catalog.
Technical ContextAI
The root cause is CWE-20 (Improper Input Validation): OPPO Health fails to restrict which external URLs its WebView component is permitted to load. WebView embeds a browser engine inside a native mobile application, and when arbitrary attacker-controlled URLs are rendered, injected JavaScript runs in a context that may have access to native application bridges, session tokens, or stored credentials. The CPE string cpe:2.3:a:oppo:oppo_health:*:*:*:*:*:*:*:* uses a wildcard version range, though EUVD confirms OPPO Health 6.2.9 as the explicitly affected release. The SC:H signal in the CVSS 4.0 vector indicates that stolen tokens affect systems beyond the app itself - for example, backend health services authenticated with those credentials.
RemediationAI
Consult the OPPO security advisory at https://security.oppo.com/en/noticeDetail?notice_only_key=NOTICE-2088198578949595136 for patch details; no exact fixed version number is derivable from the provided intelligence data, so the advisory must be verified directly. As a compensating control pending a patch, users should be advised not to open unverified URLs within the OPPO Health application. Mobile device management (MDM) policies that restrict OPPO Health's outbound network connectivity to a known allowlist of OPPO-operated domains would reduce the attack surface by preventing the WebView from reaching attacker-controlled servers, though this may break legitimate in-app features that rely on loading external content. Disabling deep-link handling for the OPPO Health app at the OS level, if configurable, would also limit the delivery vector.
Same weakness CWE-20 – Improper Input Validation
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External POC / Exploit Code
Leaving vuln.today
EUVD-2026-60058
GHSA-96vw-w9m3-gj89