# Zen Browser vulnerabilities

Source: https://junglewise.ai/threats/vendors/zen-browser  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/vendors/zen-browser.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 5 vulnerabilities in Zen Browser: 0 in the last 7 days and 0 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-45150, was published on 15 July 2026. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 0
- All time: 5 (0 critical, 0 exploited in the wild)

## About Zen Browser

Zen Browser is an open-source web browser project focused on privacy and user experience.

## Latest Zen Browser vulnerabilities

- [CVE-2026-45150: Zen Browser UI misrepresentation in fullscreen mode](https://junglewise.ai/threats/cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode) (info, CVSS 6.3, published 15 Jul 2026)
- [CVE-2026-57501: Zen Browser Privilege Escalation in Glance and Split-View Context Menus](https://junglewise.ai/threats/cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context) (info, CVSS 0, published 9 Jul 2026)
- [CVE-2026-44659: Zen Browser address bar spoofing via long subdomains](https://junglewise.ai/threats/cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains) (medium, CVSS 4.7, published 11 May 2026)
- [CVE-2026-44658: Zen Browser Improper Input Validation in RSS Live-Folders](https://junglewise.ai/threats/cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders) (low, CVSS 2.4, published 11 May 2026)
- [CVE-2026-41431: Zen Browser improper signature verification in MAR updater](https://junglewise.ai/threats/cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater) (high, CVSS 8, published 11 May 2026)

## Most severe Zen Browser vulnerabilities

- [CVE-2026-41431: Zen Browser improper signature verification in MAR updater](https://junglewise.ai/threats/cve-2026-41431-zen-browser-improper-signature-verification-in-mar-updater) (high, CVSS 8, published 11 May 2026)
- [CVE-2026-44659: Zen Browser address bar spoofing via long subdomains](https://junglewise.ai/threats/cve-2026-44659-zen-browser-address-bar-spoofing-via-long-subdomains) (medium, CVSS 4.7, published 11 May 2026)
- [CVE-2026-44658: Zen Browser Improper Input Validation in RSS Live-Folders](https://junglewise.ai/threats/cve-2026-44658-zen-browser-improper-input-validation-in-rss-live-folders) (low, CVSS 2.4, published 11 May 2026)
- [CVE-2026-45150: Zen Browser UI misrepresentation in fullscreen mode](https://junglewise.ai/threats/cve-2026-45150-zen-browser-ui-misrepresentation-in-fullscreen-mode) (info, CVSS 6.3, published 15 Jul 2026)
- [CVE-2026-57501: Zen Browser Privilege Escalation in Glance and Split-View Context Menus](https://junglewise.ai/threats/cve-2026-57501-zen-browser-privilege-escalation-in-glance-and-split-view-context) (info, CVSS 0, published 9 Jul 2026)

## Vulnerabilities per week

Nothing was published in the last eight weeks.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 0 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Zen Browser technologies

- [Zen Browser](https://junglewise.ai/threats/technologies/zen-browser): 5 vulnerabilities

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Zen Browser vulnerabilities", https://junglewise.ai/threats/vendors/zen-browser, 9 November 2026.