EUVD-2026-17809
GHSA-3rff-rg87-9c8x
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
Use after free in Compositing in Google Chrome prior to 146.0.7680.178 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)
AnalysisAI
Use-after-free in Chrome's compositing engine allows remote attackers who have compromised the renderer process to escape the sandbox via crafted HTML pages in Google Chrome prior to version 146.0.7680.178. This high-severity vulnerability requires prior renderer compromise but enables privilege escalation from the sandboxed renderer to system-level access, making it a critical sandbox bypass vector. Vendor-released patch addresses the issue in Chrome 146.0.7680.178 and later.
Technical ContextAI
The vulnerability exists in Google Chrome's compositing subsystem, which handles rendering optimization and layer composition. Compositing is a core graphics feature that operates at a lower privilege level within the renderer process sandbox. CWE-416 (use-after-free) indicates the compositing code references memory that has already been deallocated, likely due to improper lifetime management of compositing objects or resources. An attacker who has already achieved code execution in the renderer process can trigger this use-after-free through a specially crafted HTML page that manipulates the compositing pipeline, corrupting memory and gaining control to break out of the renderer sandbox and execute arbitrary code at the browser process level or higher.
RemediationAI
Update Google Chrome to version 146.0.7680.178 or later, which includes the fix for the use-after-free in the compositing engine. Chrome's auto-update mechanism will deploy this version to most users automatically; users can verify their current version at chrome://version/ and manually trigger updates via Help > About Google Chrome. No workarounds are available for users who cannot immediately patch; however, the attack requires prior renderer compromise, so defense-in-depth measures (limiting script execution, avoiding untrusted sites, and using enterprise security policies) reduce the likelihood of the initial renderer compromise needed to trigger this vulnerability. For detailed patch information and timeline, refer to the Chrome Releases blog at http://chromereleases.googleblog.com/2026/03/stable-channel-update-for-desktop_31.html.
Use-after-free vulnerability in the DisplayObject class in the ActionScript 3 (AS3) implementation in Adobe Flash Player
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Same weakness CWE-416 – Use After Free
View allSame technique Use After Free
View allVendor StatusVendor
Debian
| Release | Status | Fixed Version | Urgency |
|---|---|---|---|
| bullseye (security), bullseye | vulnerable | 120.0.6099.224-1~deb11u1 | - |
| bookworm | vulnerable | 143.0.7499.169-1~deb12u1 | - |
| bookworm (security) | vulnerable | 146.0.7680.164-1~deb12u1 | - |
| trixie | vulnerable | 145.0.7632.159-1~deb13u1 | - |
| trixie (security) | vulnerable | 146.0.7680.164-1~deb13u1 | - |
| forky | vulnerable | 146.0.7680.153-1 | - |
| sid | fixed | 146.0.7680.177-1 | - |
| bullseye | fixed | (unfixed) | end-of-life |
| (unstable) | fixed | 146.0.7680.177-1 | - |
SUSE
Severity: CriticalShare
External POC / Exploit Code
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