CVE-2019-8753
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 · uneditedThis issue was addressed with improved checks. This issue is fixed in macOS Catalina 10.15, watchOS 6, iOS 13, tvOS 13. Processing maliciously crafted web content may lead to a cross site scripting attack.
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 confidenceCross-site scripting (XSS) vulnerability in WebKit where processing maliciously crafted web content allows attackers to execute arbitrary JavaScript in the context of the victim's session.
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< 13.1< 10.15< 13< 6.0CVSS 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
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
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 checksWork through these to decide whether this CVE applies to you.
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Identify your Apple device type and operating systemDetermine whether the device is an iPhone/iPad (iOS), Mac (macOS), Apple TV (tvOS), or Apple Watch (watchOS). Check the device model and confirm the OS family.Affected if Running any of the four affected Apple operating systems: iOS, macOS, tvOS, or watchOS.
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Check iOS version on iPhone or iPadGo to Settings > General > About > Version on the device. Note the displayed version number.Affected if The iOS version is less than 13.1 (for example, 13.0, 12.x, or earlier).
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Check macOS version on MacClick the Apple menu > About This Mac. Note the version displayed (for example, 10.14.6, 10.14.5).Affected if The macOS version is less than 10.15 (Catalina). Versions such as 10.14.x or earlier are affected.
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Check tvOS version on Apple TVGo to Settings > General > About > Version on Apple TV. Note the version number.Affected if The tvOS version is less than 13 (for example, 12.x or earlier).
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Check watchOS version on Apple WatchOpen the Watch app on paired iPhone, go to General > About, and note the watchOS version. Alternatively, check on Apple Watch via Settings > General > About.Affected if The watchOS version is less than 6.0 (for example, 5.x or earlier).
Your environment is affected if any Apple device runs an OS version below the fixed releases: iOS 13.1+, macOS 10.15+, tvOS 13+, or watchOS 6+.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor data6.010.1513
Update affected Apple devices to macOS Catalina 10.15+, watchOS 6+, iOS 13+, or tvOS 13+ to apply the vendor patch.
- Consultation1.0 h
- Implementation2.0 h
- Testing1.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8753 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2019-8753 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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