CVE-2024-23263Network attack vector

Content Security Policy bypass via improper validation

Published Mar 8, 2024 · Updated Apr 2, 2026

Improper validation in WebKit before the listed fixes allows remote attackers to bypass Content Security Policy via crafted web content. Apple and WebKitGTK have not published the affected function, input field, or exact validation error. Exploitation requires processing attacker-controlled content and weakens page security restrictions without a reported crash or host-code execution impact.

CVSS severity6.5
Medium
EPSS probability1.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper validation in WebKit before the listed fixes allows remote attackers to bypass Content Security Policy via crafted web content. Apple and WebKitGTK have not published the affected function, input field, or exact validation error. Exploitation requires processing attacker-controlled content and weakens page security restrictions without a reported crash or host-code execution impact.

The record

CVE
CVE-2024-23263
Published
Mar 8, 2024
Updated
Apr 2, 2026
Vendor
Apple
Product
iOS
Classifications
CWE-20
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 8, 2024CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=16.7 <16.7.6
  2. Affected versionversion=17.0 <17.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Apple · iOSversion=16.7 <16.7.6; version=17.0 <17.4
Apple · iOS and iPadOSversion=0 <16.7.6; version=0 <17.4
Apple · visionOSversion=0 <1.1
Apple · Safariversion=0 <17.4
Apple · tvOSversion=0 <17.4
Apple · macOSversion=0 <14.4; version=14.0 <14.4
WebKitGTK · WebKitGTKversion=0 <2.45.2
Apple · iPadOSversion=16.7 <16.7.6; version=17.0 <17.4
Apple · watchOSversion=0 <10.4

Published CVSS scores

8.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
6.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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