CVE-2026-9923

Description

Use after free in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

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-2026-9923 PoC Concept -->
<!DOCTYPE html>
<html>
<body>
<canvas id="targetCanvas"></canvas>
<script>
  // Attempt to trigger Skia UAF via Canvas manipulation
  const canvas = document.getElementById('targetCanvas');
  const ctx = canvas.getContext('2d');

  // Setup canvas state
  ctx.fillStyle = 'red';
  ctx.fillRect(0, 0, 100, 100);

  // This is a conceptual reproduction.
  // Real exploitation requires specific Skia heap grooming.
  function triggerUAF() {
    // Simulate object lifecycle issue
    let obj = ctx.createLinearGradient(0, 0, 100, 100);
    // ... internal Skia object might be freed here ...
    // ... reuse obj to cause crash or code execution ...
    console.log('Attempting to trigger vulnerability...');
  }

  triggerUAF();
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9923
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9923
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9923/
[4] VulDB https://vuldb.com/cve/CVE-2026-9923
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html
[6] https://issues.chromium.org/issues/500393328

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9923", "sourceIdentifier": "[email protected]", "published": "2026-05-28T23:16:50.407", "lastModified": "2026-05-29T19:16:29.767", "vulnStatus": "Undergoing Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Skia in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to potentially exploit heap corruption 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:H/A:H", "baseScore": 8.8, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 2.8, "impactScore": 5.9}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-416"}]}], "references": [{"url": "https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/500393328", "source": "[email protected]"}]}}