CVE-2026-28871 | Apple Safari/iOS/iPadOS/macOS up to 26.3 Website cross site scripting

VDB-352966 · CVE-2026-28871 · GCVE-0-2026-28871 APPLE SAFARI/IOS/IPADOS/MACOS UP TO 26.3 WEBSITE CROSS SITE SCRIPTING HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.1 $5k-$25k 0.75+ Summaryinfo A vulnerability described as critical has been identified in Apple Safari, iOS, iPadOS and macOS up to 26.3. This impacts an unknown function of the component Website Handler. Executing a manipulation can lead to cross site scripting. This vulnerability is handled as CVE-2026-28871. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended. Detailsinfo A vulnerability has been found in Apple Safari, iOS, iPadOS and macOS up to 26.3 and classified as critical. This vulnerability affects an unknown code block of the component Website Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. CVE summarizes: A logic issue was addressed with improved checks. This issue is fixed in Safari 26.4, iOS 18.7.7 and iPadOS 18.7.7, iOS 26.4 and iPadOS 26.4, macOS Tahoe 26.4. Visiting a maliciously crafted website may lead to a cross-site scripting attack. The advisory is available at support.apple.com. This vulnerability was named CVE-2026-28871 since 03/03/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 03/25/2026). This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project. Upgrading to version 26.4 eliminates this vulnerability. Productinfo Type Web Browser Vendor Apple Name iOS iPadOS macOS Safari Version 26.0 26.1 26.2 26.3 License commercial Website Vendor: https://www.apple.com/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv3info VulDB Meta Base Score: 4.3 VulDB Meta Temp Score: 4.1 VulDB Base Score: 4.3 VulDB Temp Score: 4.1 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Cross site scripting CWE: CWE-79 / CWE-94 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: Safari/iOS/iPadOS/macOS 26.4 Timelineinfo 03/03/2026 CVE reserved 03/25/2026 +22 days Advisory disclosed 03/25/2026 +0 days VulDB entry created 03/25/2026 +0 days VulDB entry last update Sourcesinfo Vendor: apple.com Advisory: support.apple.com Status: Confirmed CVE: CVE-2026-28871 (🔒) GCVE (CVE): GCVE-0-2026-28871 GCVE (VulDB): GCVE-100-352966 scip Labs: https://www.scip.ch/en/?labs.20180712 Entryinfo Created: 03/25/2026 07:56 Changes: 03/25/2026 07:56 (57) Complete: 🔍 Cache ID: 99:3CD:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸