CVE-2026-17909

MEDIUMCVSS 5.3/10EPSS 0.19%

Last modified

CVE-2026-17909 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. Insufficient validation of untrusted input in Isolated Web Apps in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via malicious network traffic. (Chromium security severity: Low). EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

Insufficient validation of untrusted input in Isolated Web Apps in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via malicious network traffic. (Chromium security severity: Low)

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
0.19%

8.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GoogleChrome< 151.0.7922.72

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-17909?
Insufficient validation of untrusted input in Isolated Web Apps in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via malicious network traffic. (Chromium security severity: Low)
How severe is CVE-2026-17909?
CVE-2026-17909 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2026-17909?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST