CVE-2026-106354

MEDIUM

Published Oct 6, 2026 Modified Oct 7, 2026 CWE-668

Description

Improper resource exposure in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

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CVSS v3.1 Score

4.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

EPSS — Exploit Prediction

0.0022

Probability of exploitation

0.12%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-668 CWE-668

References

Other References

https://chromereleases.googleblog.com/2026/10/stable-channel-update-for-desktop_086471744.html https://issues.chromium.org/issues/511796554

Frequently Asked Questions

What is CVE-2026-106354? +

Improper resource exposure in Extensions in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to obtain cross-origin data via a crafted HTML page. (Chromium security severity: Medium) It has a CVSS v3.1 base score of 4.3 (MEDIUM).

How severe is CVE-2026-106354? +

CVE-2026-106354 has a CVSS v3.1 score of 4.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance. The EPSS score is 0.0022, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-106354? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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