# CVE-2026-65340: Denial of service in Safari

> Attackers can cause Safari to crash by delivering maliciously crafted web content, affecting users on Apple operating systems.

- **Severity:** Medium 4.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 17 Aug 2026
- **Updated:** 26 Oct 2026
- **Also known as:** DEBIAN-CVE-2026-65340, ECHO-4e59-76e2-7e2b, GHSA-23q2-8v7r-r2xr

## What is CVE-2026-65340?

CVE-2026-65340 is a medium-severity denial of service vulnerability in Apple Ipados, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

This issue was addressed through improved state management. This issue is fixed in Safari 26.6.1, iOS 18.7.10 and iPadOS 18.7.10, iOS 26.6.1 and iPadOS 26.6.1, macOS Tahoe 26.6.2, visionOS 27. Processing maliciously crafted web content may lead to an unexpected Safari crash.

Weakness: CWE-703 (Improper Check or Handling of Exceptional Conditions), CWE-20 (Improper Input Validation)

## Which versions are affected by CVE-2026-65340?

It affects 4 products.


Products: Apple Ipados, Apple Iphone Os, Apple Macos, Apple Safari.

## How do I fix CVE-2026-65340?

Upgrade to a fixed version.

## Is CVE-2026-65340 being exploited?

There is no known exploitation of CVE-2026-65340 in the wild and no public exploit code.

## Other vulnerabilities in Apple Ipados

- [CVE-2025-43300](https://insights.sbomify.com/CVE-2025-43300/): Apple iOS, iPadOS, and macOS Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24201](https://insights.sbomify.com/CVE-2025-24201/): Apple Multiple Products WebKit Out-of-Bounds Write (critical 10.0, exploited in the wild)
- [CVE-2025-24085](https://insights.sbomify.com/CVE-2025-24085/): Apple Multiple Products Use-After-Free (critical 10.0, exploited in the wild)
- [CVE-2025-31200](https://insights.sbomify.com/CVE-2025-31200/): Apple Multiple Products Memory Corruption (critical 9.8, exploited in the wild)
- [CVE-2025-31201](https://insights.sbomify.com/CVE-2025-31201/): Apple Multiple Products Arbitrary Read and Write (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-65340 and fix it if it is affected.

What it is: CVE-2026-65340 is a medium-severity denial of service vulnerability in Apple Ipados, published on 17 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-65340 in the wild and no public exploit code.

Affected product: Apple Ipados. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-65340/ (Markdown: https://insights.sbomify.com/CVE-2026-65340/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-65340
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-65340
- OSV: https://osv.dev/vulnerability/CVE-2026-65340

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-65340/
Summaries are generated and may contain mistakes; the official description above is the record.