CVE-2026-8509: Heap buffer overflow in WebML
Chromium: CVE-2026-8509 Heap buffer overflow in WebML
Other sources
Heap buffer overflow in WebML in Google Chrome prior to 148.0.7778.168 allowed a remote attacker to execute arbitrary code inside a sandbox via a crafted HTML page. (Chromium security severity: Critical)
— NVD
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information
— Microsoft
Credit
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 148.0.7778.167 - Upgrade
Upgrade
Google Chrome/Chromium (WebML)to a version that resolves this vulnerability.Fixed in 148.0.7778.168
Event History
Peer vulnerabilities
Found alongside the following vulnerabilities.
- CVE-2026-8510
- CVE-2026-8511
- CVE-2026-8512
- CVE-2026-8513
- CVE-2026-8514
- CVE-2026-8515
- CVE-2026-8516
- CVE-2026-8517
- CVE-2026-8518
- CVE-2026-8519
- CVE-2026-8520
- CVE-2026-8521
- CVE-2026-8522
- CVE-2026-8523
- CVE-2026-8558
- CVE-2026-8524
- CVE-2026-8525
- CVE-2026-8526
- CVE-2026-8527
- CVE-2026-8529
- CVE-2026-8530
- CVE-2026-8531
- CVE-2026-8532
- CVE-2026-8533
- CVE-2026-8534
- CVE-2026-8535
- CVE-2026-8536
- CVE-2026-8537
- CVE-2026-8538
- CVE-2026-8539
- CVE-2026-8540
- CVE-2026-8541
- CVE-2026-8542
- CVE-2026-8543
- CVE-2026-8544
- CVE-2026-8545
- CVE-2026-8546
- CVE-2026-8547
- CVE-2026-8548
- CVE-2026-8549
- CVE-2026-8550
- CVE-2026-8551
- CVE-2026-8552
- CVE-2026-8553
- CVE-2026-8554
- CVE-2026-8555
- CVE-2026-8556
- CVE-2026-8557
- CVE-2026-8559
- CVE-2026-8528
- CVE-2026-8560
- CVE-2026-8561
- CVE-2026-8562
- CVE-2026-8563
- CVE-2026-8564
- CVE-2026-8565
- CVE-2026-8566
- CVE-2026-8567
- CVE-2026-8569
- CVE-2026-8570
- CVE-2026-8571
- CVE-2026-8572
- CVE-2026-8573
- CVE-2026-8574
- CVE-2026-8575
- CVE-2026-8576
- CVE-2026-8577
- CVE-2026-8578
- CVE-2026-8579
- CVE-2026-8580
- CVE-2026-8581
- CVE-2026-8582
- CVE-2026-8583
- CVE-2026-8584
- CVE-2026-8585
- CVE-2026-8586
- CVE-2026-8587
Frequently Asked Questions
What is the severity of CVE-2026-8509?
CVE-2026-8509 has been classified with a critical severity level due to the potential for remote code execution.
How do I fix CVE-2026-8509?
To mitigate CVE-2026-8509, upgrade to Google Chrome version 148.0.7778.168 or later.
What impact does CVE-2026-8509 have on users?
Users affected by CVE-2026-8509 may be vulnerable to arbitrary code execution through malicious HTML pages.
Which versions of Google Chrome are impacted by CVE-2026-8509?
CVE-2026-8509 affects Google Chrome versions prior to 148.0.7778.168.
Does CVE-2026-8509 also affect Microsoft Edge?
Yes, CVE-2026-8509 affects Microsoft Edge (Chromium-based) versions prior to 148.0.3967.70.