CVE-2026-17700: Insufficient validation of untrusted input in Actor in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin

mediumCVSS 4.3CVE-2026-17700

Insufficient validation of untrusted input in Actor in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin data via a crafted HTML page. (Chromium security severity: High)

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-2026-17700

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-2026-177000.29% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 21% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17700	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownDSA-6408-1 chromium - security updatedebian
high[NEW] [high] Google Chrome: Multiple vulnerabilitiescert-bund
unknownGoogle Chrome Multiple Vulnerabilitieshkcert
unknownCVE-2026-17700: Chromium: CVE-2026-17700 Insufficient validation of untrusted input in Actormsrc

CVE-2026-17700: Insufficient validation of untrusted input in Actor in Google Chrome prior to 151.0.7922.72 allowed a remote attacker who had compromised the renderer process to leak cross-origin

Details

Exploitation outlook

Referenced CVEs

Same CVEs, other sources

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