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Mallory
High

Sandbox escape in Google Chrome WebGL

IdentifiersCVE-2026-9880CWE-20· Improper Input Validation

CVE-2026-9880 is an insufficient validation of untrusted input vulnerability in the WebGL component of Google Chrome prior to version 148.0.7778.216. The flaw allows a remote attacker, after first compromising the renderer process, to potentially escape Chrome's sandbox by inducing the browser to process a crafted HTML page. The available advisories do not identify the specific vulnerable function or code path, but they consistently attribute the issue to improper input validation within WebGL.

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ANALYST BRIEF

Impact, mitigation & remediation

What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.

Impact

What an attacker gets, and what they’ve been doing with it.

Successful exploitation can allow an attacker who already has code execution or equivalent control within the renderer process to break out of the browser sandbox. This can enable execution outside the renderer's confinement and may lead to broader system compromise depending on the host environment and subsequent attacker actions.

Mitigation

If you can’t patch tonight, do this now.

No specific workaround or temporary mitigation is provided in the cited advisories. The practical mitigation is to update affected browsers to fixed versions as soon as possible and reduce exposure by limiting the ability to reach attacker-controlled web content until patching is complete.

Remediation

Patch, then assume compromise.

Upgrade Google Chrome to version 148.0.7778.216 or later. For Chromium on Debian, upgrade to 148.0.7778.215-1~deb12u1 on oldstable (bookworm) or 148.0.7778.215-1~deb13u1 on stable (trixie). For Microsoft Edge (Chromium-based), upgrade to version 148.0.3967.97 or later, which includes the Chromium fix.
PUBLIC EXPLOITS

Exploits

No public exploits tracked yet. Mallory keeps watching.

VALID 0 / 0 TOTALView more in app

No public exploit code observed for this vulnerability.

EXPOSURE SURFACE

Affected products & vendors

Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.

VendorProductType
GoogleChromeapplication

Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.

ACTIVITY FEED

Recent activity

1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.

What this page doesn’t show

The version that knows your environment.

This page is what’s public. Mallory adds the parts that aren’t: which of your assets are affected, which adversaries are exploiting it right now, which detections to deploy, and what to do tonight.
Exposure mapping

Query your assets running an affected version, and investigate the blast radius.

Threat actor evidence

Every observed campaign linking this CVE to a named adversary.

Associated malware

Malware families riding this exploit, with evidence and IOCs.

Detection signatures

YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.

Vendor-by-vendor mapping

Cross-references every affected SKU, including bundled OEM variants.

Social activity

Community discussion across Reddit, Mastodon, and other social sources.