CVE-2026-8530

Description

Use after free in Network in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted HTML page. (Chromium security severity: High)

CVSS Details

CVSS Score

8.3

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Google Chrome < 148.0.7778.168

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!--
  Conceptual Proof of Concept for CVE-2026-8530
  This snippet demonstrates the logic required to trigger a Use-After-Free.
  Actual exploitation requires specific heap grooming and memory layout control.
-->
<html>
<body>
<script>
  // Simulate the vulnerable object in the Network component
  let vulnerableObject = {
    id: 491930142,
    data: new ArrayBuffer(1024),
    release: function() {
      // Simulate the free operation
      this.data = null;
      console.log("Object memory freed.");
    }
  };

  // Step 1: Attacker compromises renderer and triggers the free
  vulnerableObject.release();

  // Step 2: Attempt to use the object after free (UAF trigger)
  // In a real exploit, this memory would be reallocated with controlled data
  try {
    if (vulnerableObject.data) {
      console.log("Data still accessible (Safe)");
    } else {
      console.log("Use after free condition triggered!");
      // Further memory corruption happens here
    }
  } catch (e) {
    console.log("Crash occurred due to UAF: " + e.message);
  }
</script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-8530
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-8530
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-8530/
[4] VulDB https://vuldb.com/cve/CVE-2026-8530
[5] https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html
[6] https://issues.chromium.org/issues/491930142

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-8530", "sourceIdentifier": "[email protected]", "published": "2026-05-14T20:17:13.827", "lastModified": "2026-05-14T22:16:47.130", "vulnStatus": "Awaiting Analysis", "cveTags": [], "descriptions": [{"lang": "en", "value": "Use after free in Network in Google Chrome on Windows prior to 148.0.7778.168 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape 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:H/PR:N/UI:R/S:C/C:H/I:H/A:H", "baseScore": 8.3, "baseSeverity": "HIGH", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "HIGH"}, "exploitabilityScore": 1.6, "impactScore": 6.0}]}, "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_12.html", "source": "[email protected]"}, {"url": "https://issues.chromium.org/issues/491930142", "source": "[email protected]"}]}}