{ "document": { "acknowledgments": [ { "names": [ "Kugelblitz with Microsoft" ] }, { "names": [ "Kugelblitz with Microsoft" ] } ], "aggregate_severity": { "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Public", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en-US", "notes": [ { "category": "general", "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle", "title": "Additional Resources" }, { "category": "legal_disclaimer", "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.", "title": "Disclaimer" }, { "category": "general", "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.", "title": "Customer Action" } ], "publisher": { "category": "vendor", "contact_details": "secure@microsoft.com", "name": "Microsoft Security Response Center", "namespace": "https://msrc.microsoft.com" }, "references": [ { "category": "self", "summary": "CVE-2026-58291 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58291" }, { "category": "self", "summary": "CVE-2026-58291 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58291.json" }, { "category": "external", "summary": "Microsoft Exploitability Index", "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1" }, { "category": "external", "summary": "Microsoft Support Lifecycle", "url": "https://support.microsoft.com/lifecycle" }, { "category": "external", "summary": "Common Vulnerability Scoring System", "url": "https://www.first.org/cvss" } ], "title": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability", "tracking": { "current_release_date": "2026-07-03T07:00:00.000Z", "generator": { "date": "2026-07-03T21:25:59.388Z", "engine": { "name": "MSRC Generator", "version": "1.0" } }, "id": "msrc_CVE-2026-58291", "initial_release_date": "2026-07-02T07:00:00.000Z", "revision_history": [ { "date": "2026-07-03T07:00:00.000Z", "legacy_version": "1", "number": "1", "summary": "Information published." } ], "status": "final", "version": "1" } }, "product_tree": { "branches": [ { "branches": [ { "category": "product_version_range", "name": "<150.0.4078.48", "product": { "name": "Microsoft Edge (Chromium-based) <150.0.4078.48", "product_id": "1" } }, { "category": "product_version", "name": "150.0.4078.48", "product": { "name": "Microsoft Edge (Chromium-based) 150.0.4078.48", "product_id": "11655" } } ], "category": "product_name", "name": "Microsoft Edge (Chromium-based)" } ] }, "vulnerabilities": [ { "cve": "CVE-2026-58291", "cwe": { "id": "CWE-672", "name": "Operation on a Resource after Expiration or Release" }, "notes": [ { "category": "general", "text": "Microsoft", "title": "Assigning CNA" }, { "category": "faq", "text": "Successful exploitation of this vulnerability requires an attacker to craft deceptive or invisible form elements and user to perform two sequential taps.", "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?" }, { "category": "faq", "text": "The type of information that could be disclosed if an attacker successfully exploited this vulnerability is sensitive information.", "title": "What type of information could be disclosed by this vulnerability?" }, { "category": "faq", "text": "An attacker could host a specially crafted website designed to exploit the vulnerability through Microsoft Edge and then convince a user to view the website. However, in all cases an attacker would have no way to force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action, typically by an enticement in an email or instant message, or by getting the user to open an attachment sent through email.", "title": "How could an attacker exploit this vulnerability via the Network?" }, { "category": "faq", "text": "An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.", "title": "According to the CVSS metric, a successful exploitation could lead to a scope change (S:C). What does this mean for this vulnerability?" }, { "category": "faq", "text": "The user must visit the attacker‑controlled webpage, and perform the two tap gestures that cause autofill to activate.", "title": "According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?" }, { "category": "faq", "text": "150.0.4078.48: 150.0.4078.48, 07/03/2026: 07/03/2026, 150.0.7871.47: 150.0.7871.47", "title": "What is the version information for this release?" } ], "product_status": { "fixed": [ "11655" ], "known_affected": [ "1" ] }, "references": [ { "category": "self", "summary": "CVE-2026-58291 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - HTML", "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-58291" }, { "category": "self", "summary": "CVE-2026-58291 Microsoft Edge (Chromium-based) Information Disclosure Vulnerability - CSAF", "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-58291.json" } ], "remediations": [ { "category": "vendor_fix", "date": "2026-07-03T07:00:00.000Z", "details": "150.0.4078.48:Security Update:https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security", "product_ids": [ "1" ], "url": "https://docs.microsoft.com/en-us/DeployEdge/microsoft-edge-relnotes-security" } ], "scores": [ { "cvss_v3": { "attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "HIGH", "environmentalsScore": 0.0, "exploitCodeMaturity": "UNPROVEN", "integrityImpact": "NONE", "privilegesRequired": "NONE", "remediationLevel": "OFFICIAL_FIX", "reportConfidence": "CONFIRMED", "scope": "CHANGED", "temporalScore": 5.3, "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C", "version": "3.1" }, "products": [ "1" ] } ], "threats": [ { "category": "impact", "details": "Information Disclosure" }, { "category": "exploit_status", "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely" } ], "title": "Microsoft Edge (Chromium-based) Information Disclosure Vulnerability" } ] }