VulnerabilityPublished 28 Oct 2024Updated 4 Nov 2025

CVE-2024-44155: A custom URL scheme handling issue was addressed with improved input validation

Source GCVE Database

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Authoritative record:CVE-2024-44155· Medium 6.5

Not known to be exploited · CVSS 6.5 Medium.

Data as of 29 Oct 2026, 23:44 UTC

CVSS 3.1 base score

6.5Medium

How severe the flaw is on the 0–10 CVSS scale.

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

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: None

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: None: There is no impact to availability within the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 28 Oct 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by 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 29 Oct 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-v69q-9h68-p7hx

What to do

AI-suggested

The issue is fixed in Safari 18, iOS 17.7.1, iPadOS 17.7.1, macOS Sequoia 15, watchOS 11, iOS 18, and iPadOS 18. Users and administrators should apply these updates to remediate the vulnerability. No additional mitigation steps are indicated.

Description

CVE-2024-44155 is a vulnerability involving a custom URL scheme handling issue that could allow malicious web content to violate iframe sandboxing policies. The issue is addressed by improved input validation and fixed in Safari 18, iOS 17.7.1, iPadOS 17.7.1, macOS Sequoia 15, watchOS 11, iOS 18, and iPadOS 18.

Impact

The vulnerability allows malicious web content to violate iframe sandboxing policies, which may lead to unauthorized interactions or actions within the browser environment. The CVSS score of 6.5 (medium severity) reflects that exploitation requires user interaction but can result in a high impact on integrity. There is no indication of confidentiality or availability impact.

Summary

This vulnerability concerns improper handling of custom URL schemes in affected Apple operating systems and Safari browser versions. The flaw could enable maliciously crafted web content to bypass iframe sandboxing policies, potentially leading to unauthorized actions within the browser context. Apple has fixed the issue by improving input validation in the specified software versions.

References

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