CVE-2026-17844: Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious

mediumCVSS 4.3CVE-2026-17844

Insufficient validation of untrusted input in Cast in Google Chrome prior to 151.0.7922.72 allowed an attacker on the local network segment to leak cross-origin data via malicious network traffic. (Chromium security severity: Medium)

Details

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

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-17844

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-2026-178440.10% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 1% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-17844	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

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

unknownCVE-2026-17844: Chromium: CVE-2026-17844 Insufficient validation of untrusted input in Castmsrc

Recent advisories for Insufficient validation of

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.

highCVE-2026-16843: Some Hikvision Networking Products are vulnerable to authenticated command execution due to in…nvd · 2026-07-31
highCVE-2026-67345: MaxKey through 4.1.12, fixed in commit ddbb72f, contains an insufficient redirect URI validati…nvd · 2026-07-30
mediumCVE-2026-18014: Insufficient validation of untrusted input in DevTools in Google Chrome prior to 151.0.7922.72…nvd · 2026-07-30
mediumCVE-2026-18009: Insufficient validation of untrusted input in Passwords in Google Chrome prior to 151.0.7922.7…nvd · 2026-07-30
criticalCVE-2026-18002: Insufficient validation of untrusted input in Google Lens in Google Chrome prior to 151.0.7922…nvd · 2026-07-30
criticalCVE-2026-17991: Insufficient validation of untrusted input in AI in Google Chrome prior to 151.0.7922.72 allow…nvd · 2026-07-30