# Varnish-Software vulnerabilities

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

Junglewise Threat Intelligence has tracked 4 vulnerabilities in Varnish-Software: 0 in the last 7 days and 1 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-93894, was published on 18 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before. 1 technology has a page of its own.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 4 (0 critical, 0 exploited in the wild)

## About Varnish-Software

Company that develops and provides commercial support and services for the Varnish HTTP caching accelerator.

## Latest Varnish-Software vulnerabilities

- [CVE-2026-93894: Vinyl Cache VCL string methods workspace buffer overflow](https://junglewise.ai/threats/cve-2026-93894-in-vinyl-cache-before-9-0-2-workspace-buffer-overflow) (info, published 18 Sep 2026)
- [CVE-2026-40395: Varnish Enterprise denial of service in vmod_headerplus](https://junglewise.ai/threats/cve-2026-40395-varnish-enterprise-denial-of-service-in-vmod-headerplus) (medium, CVSS 4, published 12 Apr 2026)
- [CVE-2026-40394: Varnish Cache workspace overflow denial of service in HTTP/2 upgrade](https://junglewise.ai/threats/cve-2026-40394-varnish-cache-workspace-overflow-denial-of-service-in-http-2) (medium, CVSS 4, published 12 Apr 2026)
- [CVE-2026-34475: Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle…](https://junglewise.ai/threats/cve-2026-34475-varnish-cache-before-8-0-1-and-varnish-enterprise-before-6-0) (medium, CVSS 5.4, published 27 Mar 2026)

## Most severe Varnish-Software vulnerabilities

- [CVE-2026-34475: Varnish Cache before 8.0.1 and Varnish Enterprise before 6.0.16r12, in certain unchecked req.url scenarios, mishandle…](https://junglewise.ai/threats/cve-2026-34475-varnish-cache-before-8-0-1-and-varnish-enterprise-before-6-0) (medium, CVSS 5.4, published 27 Mar 2026)
- [CVE-2026-40395: Varnish Enterprise denial of service in vmod_headerplus](https://junglewise.ai/threats/cve-2026-40395-varnish-enterprise-denial-of-service-in-vmod-headerplus) (medium, CVSS 4, published 12 Apr 2026)
- [CVE-2026-40394: Varnish Cache workspace overflow denial of service in HTTP/2 upgrade](https://junglewise.ai/threats/cve-2026-40394-varnish-cache-workspace-overflow-denial-of-service-in-http-2) (medium, CVSS 4, published 12 Apr 2026)
- [CVE-2026-93894: Vinyl Cache VCL string methods workspace buffer overflow](https://junglewise.ai/threats/cve-2026-93894-in-vinyl-cache-before-9-0-2-workspace-buffer-overflow) (info, published 18 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| 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 | 1 | 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 |

## Varnish-Software technologies

- [Varnish-Software Varnish Enterprise](https://junglewise.ai/threats/technologies/varnish-enterprise): 3 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, "Varnish-Software vulnerabilities", https://junglewise.ai/threats/vendors/varnish-software, 9 November 2026.