EUVD-2026-42459
GHSA-rmv3-p6fw-xh3h
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Reachable from any web page with no auth (AV:N/PR:N) but needs the victim to open it (UI:R); execution stays in the sandboxed renderer so S:U with high renderer C/I/A.
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Use after free in IndexedDB in Google Chrome prior to 150.0.7871.115 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Renderer-process code execution in Google Chrome desktop before 150.0.7871.115 arises from a use-after-free in the IndexedDB implementation, letting a remote attacker run arbitrary code within the Chromium sandbox when a victim opens a crafted HTML page. Chromium rated the flaw Medium severity even though the CVSS base score is 8.8, reflecting that execution is confined to the sandboxed renderer rather than the host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to actively open or navigate to attacker-controlled HTML in a vulnerable Chrome build (UI:R), and the crafted page must exercise the IndexedDB API to reach the use-after-free code path. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H = 8.8) indicates a network-reachable, low-complexity, unauthenticated flaw requiring only that the victim visit a page, with high confidentiality/integrity/availability impact but no scope change. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a malicious web page containing crafted JavaScript that drives IndexedDB operations to trigger the use-after-free, then lures a victim to open it via phishing, a malvertising link, or a compromised site. When the page loads, the dangling reference is exploited to gain arbitrary code execution inside the victim's sandboxed Chrome renderer, positioning the attacker to pair it with a separate sandbox-escape bug for full compromise. … |
| Remediation | Vendor-released patch: update Google Chrome to 150.0.7871.115 or later on all desktop platforms; most installations receive this automatically, so verify the update applied via chrome://settings/help and relaunch the browser to complete it, since the running process retains the vulnerable code until restart. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Audit Chrome versions deployed across endpoints and confirm all systems running versions below 150.0.7871.115; issue critical update notification to all users. …
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Same weakness CWE-416 – Use After Free
View allSame technique Memory Corruption
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External POC / Exploit Code
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