CVE-2026-17742: Insufficient policy enforcement in Payments in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security

mediumCVSS 4.3CVE-2026-17742

Insufficient policy enforcement in Payments in Google Chrome prior to 151.0.7922.72 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)

Details

Source: NVD Recent CVEs (US · database · site)
Severity: medium — CVSS 4.3
Published: 2026-07-30
Last updated: 2026-07-31
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-17742

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-177420.20% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 10% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17742	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownCVE-2026-17742: Chromium: CVE-2026-17742 Insufficient policy enforcement in Paymentsmsrc

Recent advisories for Insufficient policy enforcement

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

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mediumCVE-2026-17985: Insufficient policy enforcement in Speech in Google Chrome prior to 151.0.7922.72 allowed a re…nvd · 2026-07-30
mediumCVE-2026-17976: Insufficient policy enforcement in Extensions in Google Chrome prior to 151.0.7922.72 allowed …nvd · 2026-07-30