CVE-2026-17858
published 2026-07-30CVE-2026-17858: Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page…
PriorityP420medium4.3CVSS 3.1
AVNACLPRNUIRSUCLINAN
EPSS
0.23%
14.3th percentile
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| chrome | < 151.0.7922.72 | 151.0.7922.72 | |
| chrome | >= 151.0.7922.72 < 151.0.7922.72 | 151.0.7922.72 | |
| chrome_desktop | — | — |
CVSS provenance
nvdv3.14.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
vendor_redhat4.3MEDIUM
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Red Hat
chromium-browser: chromium-browser: Uninitialized Use in WebNN
vendor_redhat·2026-07-30·CVSS 4.3
CVE-2026-17858 [MEDIUM] CWE-824 chromium-browser: chromium-browser: Uninitialized Use in WebNN
chromium-browser: chromium-browser: Uninitialized Use in WebNN
An uninitialized use flaw was found in the WebNN component of the Chromium browser.
Upstream bug(s):
https://code.google.com/p/chromium/issues/detail?id=520191468
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-2026-17858
vendor_chrome·2026-07-29
CVE-2026-17858 [MEDIUM] Stable Channel Update for Desktop: CVE-2026-17858
Stable Channel Update for Desktop
CVE-2026-17858: Uninitialized Use in WebNN. Reported by Google on 2026-06-05 [N/A][ 520196753 ] Medium CVE-2026-17859: Side-channel information leakage in Favicons
Reported by Google on 2026-06-05 [N/A][ 520407381 ] Medium CVE-2026-17860: Insufficient validation of untrusted input in Mobile
Severity: medium
GHSA
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
ghsa_unreviewed·2026-07-30
CVE-2026-17858 [MEDIUM] CWE-457 Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page.
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
No detection rules found.
No public exploits indexed.
Bugzilla
CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [epel-all]
bugzilla·2026-07-30·CVSS 4.3
CVE-2026-17858 [MEDIUM] CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [epel-all]
CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [epel-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Bugzilla
CVE-2026-17858 chromium-browser: chromium-browser: Uninitialized Use in WebNN
bugzilla·2026-07-30·CVSS 4.3
CVE-2026-17858 [MEDIUM] CVE-2026-17858 chromium-browser: chromium-browser: Uninitialized Use in WebNN
CVE-2026-17858 chromium-browser: chromium-browser: Uninitialized Use in WebNN
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
Bugzilla
CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [fedora-all]
bugzilla·2026-07-30·CVSS 4.3
CVE-2026-17858 [MEDIUM] CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [fedora-all]
CVE-2026-17858 chromium: chromium-browser: Uninitialized Use in WebNN [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
Uninitialized Use in WebNN in Google Chrome on Windows prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
2026-07-30
Published