Missing authorization in Yappli, Inc. Yappli
Priority LOW 37CWE-862Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-862.
Summary
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.
Why it matters now
EPSS 0.0087 59th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Yappli, Inc. | Yappli | versions since v7.3.6 and prior to v9.30.0 | — | No fix listed | CNA |
- Yappli VendorYappli, Inc. Affected versions since v7.3.6 and prior to v9.30.0 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:yappli:yappli:*:*:*:*:*:*:*:* | 7.3.6 to before 9.30.0 | Vulnerable | Yappli, Inc. |
- cpe:2.3:a:yappli:yappli:*:*:*:*:*:*:*:* Versions 7.3.6 to before 9.30.0 Vulnerable ·Yappli, Inc.
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-20873
- 2026-10-03 Alias added: GHSA-qqj9-5rm5-5hhr
References
Sources
- CVE-2021-20873 · CVE Program
- CVE-2021-20873 · NVD
- FIRST EPSS
- GHSA-qqj9-5rm5-5hhr · GitHub Advisory Database · CC BY 4.0
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