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Actively exploited in the wild. This CVE is on the CISA Known Exploited Vulnerabilities list — treat remediation as urgent. Federal remediation due by 12 Dec 2024.
Debian LinuxOperating system · Debian

CVE-2024-44309

MEDIUM · 6.3 CVSS v3.1 Published 2024-11-20
Fix available
A fix is available. Upgrade to 2.1.1 / 15.1.1 or later.
See remediation →
100/100
Remediation priority · Urgent
In the wild Remotely reachable No privileges

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A cookie management issue was addressed with improved state management. This issue is fixed in Safari 18.1.1, iOS 17.7.2 and iPadOS 17.7.2, iOS 18.1.1 and iPadOS 18.1.1, macOS Sequoia 15.1.1, visionOS 2.1.1. Processing maliciously crafted web content may lead to a cross site scripting attack. Apple is aware of a report that this issue may have been actively exploited on Intel-based Mac systems.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

A cookie management flaw in Safari and Apple operating systems allows maliciously crafted web content to bypass same-origin restrictions via improper state management, leading to cross-site scripting (XSS). This enables attackers to steal session cookies or execute arbitrary JavaScript in victim's context.

MitigationApply vendor-supplied patches by updating to Safari 18.1.1, iOS/iPadOS 17.7.2 or 18.1.1, macOS Sequoia 15.1.1, or visionOS 2.1.1. This is a critical priority given confirmed in-the-wild exploitation.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Debian LinuxOperating system
Affected:= 11.0
SafariWeb browser
Affected:< 18.1.1
IpadosOperating system
Affected:< 17.7.2>= 18.0, < 18.1.1
Iphone OsOperating system
Affected:< 17.7.2>= 18.0, < 18.1.1
macOSOperating system
Affected:>= 15.0, < 15.1.1
VisionosOperating system
Affected:< 2.1.1

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check Safari version on macOS
    Open Safari > About Safari (or run: defaults read /Applications/Safari.app/Contents/Info CFBundleShortVersionString)
    Affected if Version is less than 18.1.1
  2. Check macOS version
    Open System Settings > About, or run: sw_vers -productVersion
    Affected if macOS version is 15.0 through 15.1.0 (inclusive) when using Safari or any WebKit-based browser
  3. Check iOS version on iPhone
    Go to Settings > General > About, or check via Xcode/Apple Configurator
    Affected if iOS version is less than 17.7.2, OR between 18.0 and 18.1.0 inclusive
  4. Check iPadOS version on iPad
    Go to Settings > General > About
    Affected if iPadOS version is less than 17.7.2, OR between 18.0 and 18.1.0 inclusive
  5. Check visionOS version
    Go to Settings > General > About on Apple Vision device
    Affected if visionOS version is less than 2.1.1

A user is affected if they run Safari (any version) or any WebKit-based browser on a vulnerable macOS (15.0-15.1.0), iOS/iPadOS (<17.7.2 or 18.0-18.1.0), or visionOS (<2.1.1) version.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 2.1.1 / 15.1.1 / 17.7.2 or later
Fixed in 2.1.115.1.117.7.2
Interim mitigation

Apply vendor-supplied patches by updating to Safari 18.1.1, iOS/iPadOS 17.7.2 or 18.1.1, macOS Sequoia 15.1.1, or visionOS 2.1.1. This is a critical priority given confirmed in-the-wild exploitation.

Recommended fix High confidence

iOS/iPadOS 17.7.2 or 18.1.1, macOS Sequoia 15.1.1, Safari 18.1.1, visionOS 2.1.1

  1. For iPhone and iPad: Go to Settings > General > Software Update and update to iOS/iPadOS 17.7.2 or iOS/iPadOS 18.1.1
  2. For Mac: Go to System Settings > General > Software Update and update to macOS Sequoia 15.1.1
  3. For Safari: Update through macOS Sequoia 15.1.1 or standalone Safari 18.1.1
  4. For visionOS: Go to Settings > General > Software Update and update to visionOS 2.1.1
Caveat Standard OS update considerations apply - backup data before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Debian Linux Exploited in the wild — priority engagement
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
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An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-44309 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data