CVE-2021-20873
HIGH
8.1
CVSS Score
Published: December 28, 2021 at 01:30 AM UTC
Updated: June 17, 2026 at 03:34 AM UTC
1 product affected across 1 vendorYappli
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Severity
HIGH8.1
Exploit prediction
EPSS 0.9%
Description
Yappli is an application development platform which provides the function to access a requested URL using Custom URL Scheme. When Android apps are developed with Yappli versions since v7.3.6 and prior to v9.30.0, they are vulnerable to improper authorization in Custom URL Scheme handler, and may be directed to unintended sites via a specially crafted URL.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://jvn.jp/en/jp/JVN66422035/index.htmlx_refsource_MISCVendor Advisory
Source: [email protected]
https://support.yappli.co.jp/hc/ja/articles/4410249902745CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-862
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