CVE-2026-4458
published 2026-03-20CVE-2026-4458: Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially…
PriorityP348high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.19%
9.2th percentile
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
Affected
9 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chromium | chromium | >= 0 < 146.0.7680.153-1~deb12u1 | 146.0.7680.153-1~deb12u1 |
| chromium | chromium | >= 0 < 146.0.7680.153-1~deb13u1 | 146.0.7680.153-1~deb13u1 |
| chromium | chromium | >= 0 < 146.0.7680.153-1 | 146.0.7680.153-1 |
| debian | chromium | < chromium 146.0.7680.153-1~deb12u1 (bookworm) | chromium 146.0.7680.153-1~deb12u1 (bookworm) |
| chrome | < 146.0.7680.153 | 146.0.7680.153 | |
| chrome | >= 146.0.7680.153 < 146.0.7680.153 | 146.0.7680.153 | |
| chrome_chrome | — | — | |
| msrc | microsoft_edge | — | — |
| paloalto | prisma_browser | — | — |
CVSS provenance
nvdv3.18.8HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
osv8.8HIGH
vendor_debian8.8HIGH
vendor_msrc8.8HIGH
vendor_redhat8.8HIGH
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Palo Alto
PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
vendor_paloalto·2026-05-13·CVSS 8.8
CVE-2026-4439 [HIGH] PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
PAN-SA-2026-0007 Chromium and Prisma Browser: Monthly Vulnerability Update (May 2026)
Palo Alto Networks incorporated the following Chromium security fixes into our products: https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_28.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_22.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html https://chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop.html CVE Summary CVE-2026-4439 Out of bounds memory access in WebGL CVE-2026-4440 Out of bounds read and write in WebGL CVE-2026-4441 Use after free in Base CVE-2026-4442 Heap buffer overflow in
Chrome
Stable Channel Update for Desktop: CVE-2026-4458
vendor_chrome·2026-03-18·CVSS 8.8
CVE-2026-4458 [HIGH] Stable Channel Update for Desktop: CVE-2026-4458
Stable Channel Update for Desktop
CVE-2026-4458: Use after free in Extensions. Reported by Shaheen Fazim on 2026-03-04 [TBD][ 490246422 ] High CVE-2026-4459: Out of bounds read and write in WebAudio
Reported by Jihyeon Jeong (Compsec Lab, Seoul National University / Research Intern) on 2026-03-06 [TBD][ 490254124 ] High CVE-2026-4460: Out of bounds read in Skia
Severity: high
Red Hat
chromium-browser: Use after free in Extensions
vendor_redhat·2026-03-18·CVSS 8.8
CVE-2026-4458 [HIGH] CWE-825 chromium-browser: Use after free in Extensions
chromium-browser: Use after free in Extensions
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
An use after free flaw was found in the Extensions component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=489619753
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Microsoft
Chromium: CVE-2026-4458 Use after free in Extensions
vendor_msrc·2026-03-10·CVSS 8.8
CVE-2026-4458 [HIGH] Chromium: CVE-2026-4458 Use after free in Extensions
Chromium: CVE-2026-4458 Use after free in Extensions
Description: This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
FAQ: Why is this Chrome CVE included in the Security Update Guide?
The vulnerability assigned to this CVE is in Chromium Open Source Software (OSS) which is consumed by Microsoft Edge (Chromium-based). It is being documented in the Security Update Guide to announce that the latest version of Microsoft Edge (Chromium-based) is no longer vulnerable.
How can I see the version of the browser?
In your Microsoft Edge browser, click on the 3 dots (...) on the very right-hand side of the window
Click on Help and Feedback
Click on About Microsoft Edge
FAQ:
Debian
CVE-2026-4458: chromium - Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an...
vendor_debian·2026·CVSS 8.8
CVE-2026-4458 [HIGH] CVE-2026-4458: chromium - Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an...
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
Scope: local
bookworm: resolved (fixed in 146.0.7680.153-1~deb12u1)
bullseye: open
forky: resolved (fixed in 146.0.7680.153-1)
sid: resolved (fixed in 146.0.7680.153-1)
trixie: resolved (fixed in 146.0.7680.153-1~deb13u1)
OSV
CVE-2026-4458: Use after free in Extensions in Google Chrome prior to 146
osv·2026-03-20·CVSS 8.8
CVE-2026-4458 [HIGH] CVE-2026-4458: Use after free in Extensions in Google Chrome prior to 146
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
GHSA
GHSA-fj38-hpf4-jxg7: Use after free in Extensions in Google Chrome prior to 146
ghsa_unreviewed·2026-03-20
CVE-2026-4458 [HIGH] CWE-416 GHSA-fj38-hpf4-jxg7: Use after free in Extensions in Google Chrome prior to 146
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
No detection rules found.
No public exploits indexed.
Wiz
CVE-2026-4458 Impact, Exploitability, and Mitigation Steps | Wiz
blogs_wiz·CVSS 8.8
CVE-2026-4458 [HIGH] CVE-2026-4458 Impact, Exploitability, and Mitigation Steps | Wiz
## CVE-2026-4458 :
vulnerability analysis and mitigation
Use after free in Extensions in Google Chrome prior to 146.0.7680.153 allowed an attacker who convinced a user to install a malicious extension to potentially exploit heap corruption via a crafted Chrome Extension. (Chromium security severity: High)
Source : NVD
## 8.8
Score
Published March 20, 2026
Severity HIGH
CNA Score 8.8
Has Public Exploit No
Has CISA KEV Exploit No
CISA KEV Release Date N/A
CISA KEV Due Date N/A
Exploitation Probability Percentile (EPSS) 8.3
Exploitation Probability (EPSS) N/A
Affected packages and libraries
chromium
chromium-common-debuginfo
Sources
Alpine 3.23, edge Severity HIGH Has Fix Added at: Mar 29, 2026
Debian 11 Severity HIGH No Fix Added at: Mar 20, 2026
Debian 12, 13, 14 Seve
Bugzilla
CVE-2026-26127 .net: .NET: Denial of Service via out-of-bounds read
bugzilla·2026-03-10·CVSS 7.5
CVE-2026-26127 [HIGH] CVE-2026-26127 .net: .NET: Denial of Service via out-of-bounds read
CVE-2026-26127 .net: .NET: Denial of Service via out-of-bounds read
Out-of-bounds read in .NET allows an unauthorized attacker to deny service over a network.
Discussion:
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10
Via RHSA-2026:4450 https://access.redhat.com/errata/RHSA-2026:4450
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 10
Via RHSA-2026:4453 https://access.redhat.com/errata/RHSA-2026:4453
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:4443 https://access.redhat.com/errata/RHSA-2026:4443
---
This issue has been addressed in the following products:
Red Hat Enterprise Linux 8
Via RHSA-2026:4458 https://access.redhat.com/errata/RHSA-2026
2026-03-20
Published