PatchSiren cyber security CVE debrief
CVE-2025-68709 SailingLab CVE debrief
CVE-2025-68709 describes a local arbitrary JavaScript execution vulnerability in SailingLab AppLock (package name com.alpha.applock) version 4.3.8 for Android. The application's BrowserMainActivity component accepts VIEW intents containing javascript: URIs without proper validation, enabling an attacker with local access to execute arbitrary JavaScript code. This unsafe navigation path may facilitate UI spoofing attacks or privilege escalation within the application context. The vulnerability was published to the CVE List on 26 May 2026 and subsequently modified minutes later. The NVD entry currently carries a status of 'Deferred', indicating the vulnerability is under review and has not yet received a CVSS score or severity rating. The affected vendor attribution remains uncertain, with only a low-confidence candidate reference to 'Google' derived from reference domain analysis; the actual developer appears to be SailingLab based on the application package name. No known exploitation in ransomware campaigns has been documented, and the vulnerability has not been added to CISA's Known Exploited Vulnerabilities catalog.
- Vendor
- SailingLab
- Product
- AppLock
- CVSS
- MEDIUM 5.2
- CISA KEV
- Not listed in stored evidence
- Original CVE published
- 2026-05-26
- Original CVE updated
- 2026-05-27
- Advisory published
- 2026-05-26
- Advisory updated
- 2026-05-27
Who should care
Organizations with mobile device management programs deploying AppLock applications, Android security researchers tracking WebView vulnerabilities, and users relying on application locking utilities for sensitive data protection should prioritize awareness of this vulnerability. Security teams should evaluate whether managed devices have this specific application version installed and assess compensating controls given the absence of an available patch.
Technical summary
The vulnerability exists in BrowserMainActivity, which exposes an intent filter accepting VIEW actions without adequate URI scheme validation. When a malicious application or local attacker sends an intent with a javascript: URI, the activity loads this URI directly, executing arbitrary JavaScript in the context of the application's WebView. This represents a classic unsafe intent handling pattern in Android applications where implicit intent acceptance combined with insufficient input validation leads to code execution. The attack requires local access (either physical device access or co-resident malicious application), limiting exploitation to scenarios where the attacker already has some presence on the device. Potential impacts include phishing via UI manipulation, access to application-internal JavaScript interfaces if exposed, or escalation within the application's sandboxed environment.
Defensive priority
medium
Recommended defensive actions
- Review and update Android applications to remove or restrict javascript: URI handling in WebView components and intent filters
- Implement allowlist-based URL validation in BrowserMainActivity before loading any URI
- Audit application components that accept external intents for unsafe navigation patterns
- Monitor for application updates from the developer addressing this vulnerability
- Consider application removal or network isolation for managed devices pending patch availability
Evidence notes
Vulnerability description sourced from official CVE record and NVD entry. Vendor attribution marked as low confidence with review flag based on source corpus. Timeline dates derived from CVE publishedAt and modifiedAt fields per source data. No CVSS vector or severity available due to 'Deferred' status in NVD.
Official resources
2026-05-26