CVE-2026-17858: Google Chrome · Uninitialized Use
Affects Google ChromeSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium : upgrade to 151.0.7922.72 when convenient.
Data as of 28 Oct 2026, 05:11 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 20% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 151.0.7922.72
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 30 Jul 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 26 Oct 2026.
What to do
Upgrade Chrome and google/chrome to 151.0.7922.72.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| GoogleChrome | Affected
| Fixed in
|
Googlegoogle/chromepkg:deb/google/chromeOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Until official confirmation, users should update to version 151.0.7922.72 or later when available. No specific workarounds or mitigations are documented.
Description
CVE-2026-17858 is a medium severity vulnerability in Google Chrome on Windows involving uninitialized use in the WebNN component. This flaw allows a remote attacker to leak cross-origin data by tricking a user into visiting a crafted HTML page. The vulnerability affects versions prior to 151.0.7922.72. No confirmed exploits in the wild have been reported. A vendor advisory is available but does not explicitly confirm patch status or remediation details.