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Google Chrome CVE-2026-18002

| EUVDEUVD-2026-50928 CRITICAL
Improper Input Validation (CWE-20)
2026-07-30 Chrome GHSA-2wqv-r9pg-89qm
Critical
Disputed · 9.6 Vendor: Chrome
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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain

  1. Access
    Compromise renderer process via prior exploit
  2. Delivery
    Serve crafted HTML to Google Lens
  3. Exploit
    Trigger improper input validation (CWE-20)
  4. Execution
    Escape browser sandbox
  5. Impact
    Gain browser-process control on host

Vulnerability Assessment

Weakness
CWE
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Exploitation Conditions

Exploitation requires that the attacker has ALREADY compromised the Chrome renderer process - this is a second-stage sandbox escape, not a standalone remote bug - and additionally requires a crafted HTML page processed through the Google Lens code path plus user interaction (UI:R, e.g. visiting/interacting with the malicious page). The prerequisite renderer compromise is the dominant limiting factor: without a working renderer exploit to chain from, this vulnerability cannot be reached, which is consistent with Chromium's 'Low' severity rating and the very low EPSS. It affects Chrome desktop before 151.0.7922.72.

Impact

The signals are sharply contradictory and must be reconciled. The published CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H = 9.6 Critical) reads as a near-worst-case network bug, but the description explicitly states the attacker must have 'compromised the renderer process' first - meaning PR:N/AC:L overstates the true ease, since this is a chained second-stage escape, not standalone remote code execution. Reinforcing the lower real-world risk: Chromium's own security team rated the severity 'Low', EPSS is only 0.16% (6th percentile), there is no KEV listing, and no public exploit was identified. This is therefore a high-CVSS-but-moderate-real-risk issue: dangerous as the second link in an exploit chain (which is why sandbox escapes matter), but not independently exploitable and not a same-day patch emergency absent evidence of an accompanying renderer bug. Note the explicit conflict: CVSS scores it Critical while the vendor scores it Low and EPSS scores it near-negligible - verify prioritization against your own Chrome exposure and chaining risk.

Exploit ScenarioDerived

An attacker first lands a separate renderer-process exploit - for example via a malicious ad or compromised site the victim visits - then serves a crafted HTML page that abuses Google Lens's unvalidated input handling to escape the sandbox and gain browser-process-level control on the host. No public exploit code was identified, and the chain requires the victim to interact with attacker-controlled content (UI:R).

Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 0.2% exploitation probability (EPSS)

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AnalysisAIv1 – Jul 30, 2026

Sandbox escape in Google Chrome's Google Lens component (versions prior to 151.0.7922.72) lets an attacker who has already compromised the renderer process break out of the browser sandbox using a crafted HTML page. The flaw is a second-stage privilege boundary bypass rather than an initial-access bug: it requires a pre-existing renderer compromise to reach, and Google's own Chromium team rated its security severity as Low despite the 9.6 CVSS. No public exploit identified at time of analysis, and EPSS is very low at 0.16% (6th percentile).

RemediationAI

Vendor-released patch: update Google Chrome to 151.0.7922.72 or later via the desktop Stable channel (restart the browser to apply, since Chrome stages updates but only activates them on relaunch); see https://chromereleases.googleblog.com/2026/07/stable-channel-update-for-desktop_0887107924.html. In managed fleets, push the update through your enterprise update policy or endpoint management and verify the running version rather than the installed version. As a compensating control until the update is applied, prioritize patching the renderer-level bugs this escape would be chained to (keeping Chrome fully current closes both), and enforce Chrome's site isolation and sandbox settings so a renderer compromise remains harder to achieve; there is no documented feature-level toggle to disable only Google Lens as a mitigation, so the practical control is simply completing the browser update.

Affected VersionsENISA

Chrome 151.0.7922.72 <151.0.7922.72

Affected Packages

euvd chrome fix: 151.0.7922.72

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 1 package in euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

The affected technology is the Google Lens feature integrated into the Chromium/Chrome browser, which runs across the browser's multi-process sandbox architecture. Chrome isolates untrusted web content in low-privilege renderer processes; a sandbox escape crosses that trust boundary to reach the higher-privileged browser process and, effectively, the host. The root cause is CWE-20 (Improper Input Validation): Google Lens insufficiently validates untrusted input passed to it, allowing a malicious/compromised renderer to manipulate that path to break isolation. The CPE cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* confirms the affected product is the Chrome application itself.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Sources disagree (Low–Critical)
Vendor (Chrome) PRIMARY 9.6 CRITICAL
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
vuln.today AI 8.3 HIGH

Sandbox escape requires a pre-existing renderer compromise plus a crafted page and user interaction, so AC:H and UI:R; escaping the sandbox is a scope change (S:C) with full host impact.

3.1 AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
4.0 AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
SUSE CRITICAL
Red Hat 5.0 LOW

vuln.today treats the vendor’s rating as authoritative. A higher third-party CVSS (e.g. CISA-ADP) is shown for transparency but does not drive the headline severity.

CVSS VectorVendor: Chrome

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

Lifecycle Timeline

3
Patch available
Jul 30, 2026 - 02:02 EUVD
CVE Published
Jul 30, 2026 - 00:26 cve.org
UNKNOWN (no severity yet)
CVE Published
Jul 30, 2026 - 00:26 cve.org
CRITICAL 9.6

DescriptionCVE.org

Insufficient validation of untrusted input in Google Lens in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: Low)

Executive ViewAI

Why It Matters

Google Chrome versions before 151.0.7922.72 contain a privilege escalation flaw that allows attackers who have compromised a user's browser to gain complete system access. For organizations where employees encounter untrusted content or where browsers may already be compromised, this vulnerability chains browser exploitation into full system compromise. Rapid patching is critical to prevent this escalation path.

Business Impact: High
Compensating Controls

Apply vendor patch: Chrome 151.0.7922.72 or later. Interim controls while deployment progresses: monitor for renderer process crashes and anomalies, implement network-based content filtering to reduce browser compromise likelihood, and isolate critical workflows to air-gapped or restricted endpoints.

Threat Intelligence Overview

EPSS Score
0.2%
Top 94% exploitable
Prevalence
Ubiquitous
Chrome is among the most widely deployed browsers worldwide
Social Media
1
Sightings
Data Quality
6 sources
Confidence: High

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 0.2%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision
Scheduled
Exploitation
None
System Exposure· derived
Open
Automatable
No
Human Impact
High
Technical Impact
Total

Priority Score

48
Low Medium High Critical
KEV: 0
EPSS: 0
CVSS: +48
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.

Vendor StatusVendor

SUSE

Severity: Critical
Product Status
SUSE Package Hub 15 SP7 Fixed
openSUSE Leap 16.0 Fixed
SUSE Package Hub 15 SP7 Affected

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