CVE-2026-11284: Google Chrome · Side-channel Information Leakage
Affects Google ChromeSource CVE Database V5
Not known to be exploited · CVSS 6.5 Medium : upgrade to 149.0.7827.53 when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.2% chance of exploitation in 30 days – higher than 14% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 149.0.7827.53
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Jun 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: 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 30 Oct 2026.
What to do
Upgrade Chrome and google/chrome to 149.0.7827.53.
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.
Description
CVE-2026-11284 is a side-channel information leakage vulnerability in Google Chrome's PerformanceAPIs prior to version 149.0.7827.53. This flaw allows a remote attacker to leak cross-origin data by using a crafted HTML page. The vulnerability has a medium severity rating with a CVSS score of 6.5. No official remediation level or patch link is explicitly provided in the data, but a vendor advisory is available. There are no known exploits in the wild at this time.