Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android…
Priority LOW 20CWE-939Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.
Summary
Improper authorization in handler for custom URL scheme issue in "@cosme" App for Android versions prior 5.69.0 and "@cosme" App for iOS versions prior to 6.74.0 allows an attacker to lead a user to access an arbitrary website via the vulnerable App. As a result, the user may become a victim of a phishing attack.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00293 22nd percentileScored 2026-11-07
Fix Fixed "@cosme" App for Android (istyle Inc.): 5.69.0"@cosme" App for iOS (istyle Inc.): 6.74.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| istyle Inc. | "@cosme" App for Android | before 5.69.0 | 5.69.0 | Patch available | CNA |
| istyle Inc. | "@cosme" App for iOS | before 6.74.0 | 6.74.0 | Patch available | CNA |
- "@cosme" App for Android Vendoristyle Inc. Affected before 5.69.0 Fixed in 5.69.0 Patch available CNA
- "@cosme" App for iOS Vendoristyle Inc. Affected before 6.74.0 Fixed in 6.74.0 Patch available CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:istyle:\@cosme:*:*:*:*:*:android:*:* | before 5.69.0 | Vulnerable | istyle Inc. |
| cpe:2.3:a:istyle:\@cosme:*:*:*:*:*:iphone_os:*:* | up to 6.74.0 | Vulnerable | istyle Inc. |
- cpe:2.3:a:istyle:\@cosme:*:*:*:*:*:android:*:* Versions before 5.69.0 Vulnerable ·istyle Inc.
- cpe:2.3:a:istyle:\@cosme:*:*:*:*:*:iphone_os:*:* Versions up to 6.74.0 Vulnerable ·istyle Inc.
Remediation
- Fix · CNA "@cosme" App for Android (istyle Inc.) Fixed in 5.69.0
- Fix · CNA "@cosme" App for iOS (istyle Inc.) Fixed in 6.74.0
Timeline
- 2026-10-02 Threatist record created from CVE-2024-45203
- 2026-10-03 Alias added: GHSA-499r-h8wp-rfvm
References
Advisory 1
Sources
- CVE-2024-45203 · CVE Program
- CVE-2024-45203 · NVD
- FIRST EPSS
- GHSA-499r-h8wp-rfvm · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences