CVE-2026-9891
published 2026-05-28CVE-2026-9891: Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform…
PriorityP353critical9CVSS 3.1
AVNACHPRNUINSCCHIHAH
EPSS
0.24%
15.9th percentile
Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)
Affected
6 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 148.0.7778.216 | 148.0.7778.216 | |
| chrome | < 148.0.7778.215 | 148.0.7778.215 | |
| chrome | >= 148.0.7778.216 < 148.0.7778.216 | 148.0.7778.216 | |
| chrome_chromeos | — | — | |
| chrome_desktop | — | — | |
| paloalto | prisma_browser | — | — |
CVSS provenance
nvdv3.19.0CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
vendor_redhat9.0CRITICAL
Stop checking back — get the weekly exploitation signal.
Every Monday: what got weaponized or added to CISA KEV in the last seven days — each CVE cross-linked to its PoC, Nuclei template, and detection rule. Free, one email a week, unsubscribe in one click.
Palo Alto
PAN-SA-2026-0008 Chromium: Monthly Vulnerability Update (June 2026)
vendor_paloalto·2026-06-10·CVSS 8.8
CVE-2026-8509 [HIGH] PAN-SA-2026-0008 Chromium: Monthly Vulnerability Update (June 2026)
PAN-SA-2026-0008 Chromium: Monthly Vulnerability Update (June 2026)
Palo Alto Networks incorporated the following Chromium security fixes into our products: https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0877304591.html https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_0841193308.html https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop_12.html CVE Summary CVE-2026-8509 Heap buffer overflow in WebML CVE-2026-8510 Integer overflow in Skia CVE-2026-8511 Use after free in UI CVE-2026-8512 Use after free in FileSystem CVE-2026-8513 Use after free in Input CVE-2026-8514 Use after free in Aura CVE-2026-8515 Use after free
Chrome
Long Term Support Channel Update for ChromeOS: CVE-2026-9891
vendor_chrome·2026-06-03·CVSS 9.0
CVE-2026-9891 [CRITICAL] Long Term Support Channel Update for ChromeOS: CVE-2026-9891
Long Term Support Channel Update for ChromeOS
CVE-2026-9891: Use after free in Extensions. Release notes for LTS-144 can be found here Want to know more about Long-term Support? Click here Andy Wu Google Chrome OS
Severity: critical
Red Hat
chromium-browser: Use after free in Extensions
vendor_redhat·2026-05-27·CVSS 9.0
CVE-2026-9891 [CRITICAL] CWE-825 chromium-browser: Use after free in Extensions
chromium-browser: Use after free in Extensions
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=513508128
Statement: Red Hat Product Security rates the severity of this flaw as determined by the Google Chrome Security Advisory.
Chrome
Stable Channel Update for Desktop: CVE-2026-9890
vendor_chrome·2026-05-27
CVE-2026-9890 [CRITICAL] Stable Channel Update for Desktop: CVE-2026-9890
Stable Channel Update for Desktop
CVE-2026-9890: Use after free in XR. Reported by Google on 2026-05-14 [N/A][ 513508128 ] Critical CVE-2026-9891: Use after free in Extensions
Reported by Google on 2026-05-15 [N/A][ 513948178 ] Critical CVE-2026-9892: Inappropriate implementation in Skia
Severity: critical
VulDB
Google Chrome up to 148.0.7778.179 Extensions use after free (ID 513508 / WID-SEC-2026-1733)
vuldb·2026-05-30·CVSS 9.0
CVE-2026-9891 [CRITICAL] Google Chrome up to 148.0.7778.179 Extensions use after free (ID 513508 / WID-SEC-2026-1733)
A vulnerability marked as critical has been reported in Google Chrome. Affected by this vulnerability is an unknown functionality of the component Extensions. Performing a manipulation results in use after free.
This vulnerability was named CVE-2026-9891. The attack may be initiated remotely. There is no available exploit.
It is suggested to upgrade the affected component.
GHSA
GHSA-j27f-xg68-8fvv: Use after free in Extensions in Google Chrome prior to 148
ghsa_unreviewed·2026-05-29
CVE-2026-9891 [CRITICAL] CWE-416 GHSA-j27f-xg68-8fvv: Use after free in Extensions in Google Chrome prior to 148
Use after free in Extensions in Google Chrome prior to 148.0.7778.216 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a crafted Chrome Extension. (Chromium security severity: Critical)
No detection rules found.
No public exploits indexed.
2026-05-28
Published