What is CVE-2026-15778?
Insufficient validation of untrusted input in Navigation in Google Chrome prior to 150.0.7871.125 allowed a remote attacker who had compromised the renderer process to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Medium)
The record classifies CVE-2026-15778 under weakness class CWE-20. Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs a user to take an action first, and has high impact on integrity. 1 affected-product entry is recorded, across 1 vendor, listed below. The identifier was first published 106 days ago.
Severity and exploitation probability
- CVSS v3.1 base score
- 6.5 — MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N - EPSS (FIRST)
- 0.3% probability of exploitation in the next 30 days, higher than 22.8% of all scored CVEs
- CISA KEV
- Not listed in the CISA Known Exploited Vulnerabilities catalog
- Threadlinqs priority
- 4.2/10 — a Threadlinqs composite of the CVSS base score, the EPSS percentile and public exploit availability
- Published
- 2026-07-14, last modified 2026-07-15
Is CVE-2026-15778 being exploited?
It currently carries a trending score of 19 in the Threadlinqs vulnerability feed.
Affected products and versions
- Google: Chrome
How to fix CVE-2026-15778
No vendor patch reference has been recorded for CVE-2026-15778 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise.
Threat activity tracking CVE-2026-15778
1 tracked threat in the Threadlinqs corpus references CVE-2026-15778, either in the campaign’s CVE list or as an indicator on the campaign record.
Sources
Enriched from CVE.org, FIRST EPSS. Last verified by Threadlinqs on .