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VulnerabilityPublished Updated

CVE-2024-23271: Apple Safari · A malicious website may cause unexpected cross-origin behavior

Affects Apple SafariSource CVE Database V5

0

Not known to be exploited · CVSS 7.3 High.

Data as of 26 Oct 2026, 15:59 UTC

CVSS 3.1 base score
7.3High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.8% chance of exploitation in 30 days – higher than 56% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 24 Apr 2024

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.

What to do

Affected software

ProductAffectedFixed in
Apple SafariAffected
  • =0
Fixed in–

AI-suggested

Apple has released official fixes for this vulnerability in Safari 17.3 and the corresponding OS updates (iOS 17.3, iPadOS 17.3, macOS Sonoma 14.3, tvOS 17.3, watchOS 10.3). Users and administrators should apply these updates promptly to remediate the issue. No additional mitigations are required beyond installing the official patches.

Description

CVE-2024-23271 is a high-severity vulnerability in Apple Safari that involves a logic issue causing unexpected cross-origin behavior. This flaw could allow a malicious website to bypass normal cross-origin restrictions, potentially exposing user data or browser state in unintended ways. Apple addressed this issue with improved checks in Safari 17.3 and corresponding updates to iOS, iPadOS, macOS Sonoma, tvOS, and watchOS. The vulnerability has a CVSS score of 7.3, indicating significant impact on confidentiality, integrity, and availability. There are no known exploits in the wild at this time. The vendor advisory confirms the issue is fixed in the specified software versions, and users should update to these versions to mitigate the risk.

References

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