CVE-2026-9887
published 2026-05-28CVE-2026-9887: Use after free in Proxy in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted PAC script. (Chromium…
PriorityP353high8.8CVSS 3.1
AVNACLPRNUIRSUCHIHAH
EPSS
0.22%
12.3th percentile
Use after free in Proxy in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted PAC script. (Chromium security severity: Critical)
Affected
5 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_desktop | — | — | |
| 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
vendor_redhat8.8HIGH
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VulDB
Google Chrome up to 148.0.7778.179 Proxy use after free (ID 511249 / WID-SEC-2026-1733)
vuldb·2026-05-30·CVSS 8.8
CVE-2026-9887 [HIGH] Google Chrome up to 148.0.7778.179 Proxy use after free (ID 511249 / WID-SEC-2026-1733)
A vulnerability marked as critical has been reported in Google Chrome. Affected by this issue is some unknown functionality of the component Proxy. The manipulation leads to use after free.
This vulnerability is traded as CVE-2026-9887. It is possible to initiate the attack remotely. There is no exploit available.
It is suggested to upgrade the affected component.
GHSA
GHSA-3pm9-x6w9-wfc3: Use after free in Proxy in Google Chrome prior to 148
ghsa_unreviewed·2026-05-29
CVE-2026-9887 [HIGH] CWE-416 GHSA-3pm9-x6w9-wfc3: Use after free in Proxy in Google Chrome prior to 148
Use after free in Proxy in Google Chrome prior to 148.0.7778.216 allowed a remote attacker to execute arbitrary code via a crafted PAC script. (Chromium security severity: Critical)
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
Red Hat
chromium-browser: Use after free in Proxy
vendor_redhat·2026-05-27·CVSS 8.8
CVE-2026-9887 [HIGH] CWE-825 chromium-browser: Use after free in Proxy
chromium-browser: Use after free in Proxy
An use after free flaw was found in the Proxy component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=511249104
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-2026-9887
vendor_chrome·2026-05-27
CVE-2026-9887 [CRITICAL] Stable Channel Update for Desktop: CVE-2026-9887
Stable Channel Update for Desktop
CVE-2026-9887: Use after free in Proxy. Reported by Google on 2026-05-08 [N/A][ 511715166 ] Critical CVE-2026-9888: Use after free in WebView
Reported by Google on 2026-05-10 [N/A][ 511727159 ] Critical CVE-2026-9889: Out of bounds read and write in Dawn
Severity: critical
No detection rules found.
No public exploits indexed.
2026-05-28
Published