How many CVEs does Varnish Cache have?

Varnish Cache has 13 published CVE records since 2013, including 1 in the last two years.

How many Varnish Cache CVEs are in CISA KEV?

None of Varnish Cache's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.

Which Varnish Cache products have the most CVEs?

The Varnish Cache products with the most published CVEs are varnish-cache, Varnish Cache, varnish, varnish-modules, varnish-modules klarlack.

What are the most common weakness types in Varnish Cache CVEs?

Varnish Cache's CVEs most often map to these CWE weakness types: CWE-444 (Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')), CWE-20 (Improper Input Validation), CWE-400 (Uncontrolled Resource Consumption).

How many critical Varnish Cache vulnerabilities are there?

Varnish Cache has 2 critical and 8 high-severity CVEs.

What is the average severity of Varnish Cache CVEs?

The average CVSS base score across Varnish Cache's scored CVEs is 7.3.

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13 CVEs

Varnish Cache Vulnerabilities

Name: Varnish Cache vulnerability dataset (CVEs)
Creator: RadicalNotion.AI
License: https://creativecommons.org/licenses/by-nc/4.0/

CVE security advisories and vulnerability history for Varnish Cache.

13

Total CVEs

Published

0

In CISA KEV

Exploited in the wild

0

Public exploits

PoC or exploit code

7.3

Avg CVSS

2013–2025

Overview

Varnish Cache has 13 published CVE records since 2013, of which 0 are in CISA's Known Exploited Vulnerabilities catalog and 0 have a known public exploit. The average CVSS base score across scored CVEs is 7.3.

This page aggregates every publicly disclosed vulnerability (CVE) affecting Varnish Cache products, with severity breakdowns, the most-affected products, the most common weakness types, and the latest disclosures.

Security scorecard

A quick read on Varnish Cache's vulnerability posture, as a share of its 13 published CVEs.

Average CVSS: 7.3
Critical / high: 77%
Actively exploited (KEV): 0%
Public exploit available: 0%
Patch available: 100%

Severity and exploitation

How the CVSS severity of Varnish Cache's CVEs breaks down, plus how many are exploited in the wild or have public exploit code.

Critical2

High8

Medium3

Low0

In CISA’s Known Exploited Vulnerabilities catalog

0

None of Varnish Cache's CVEs are currently listed in CISA's KEV catalog.

Public exploits

0

No Varnish Cache CVEs currently have a tracked public exploit.

Most affected products

The Varnish Cache products with the most published CVEs. Follow any product to browse its versions and vulnerabilities.

Common weakness types

The CWE weakness categories most often found in Varnish Cache CVEs. Follow any weakness for its full explanation.

CNAs that assign these CVEs

The CVE Numbering Authorities that publish Varnish Cache CVE records.

Disclosure activity by year

How many Varnish Cache CVEs were published each year.

2013

1

2017

2

2019

1

2020

2

2021

2

2022

4

2025

1

Latest Varnish Cache CVEs

The most recently disclosed vulnerabilities affecting Varnish Cache.

Medium vulnerability · 2025-03-21
CWE-444
Medium · CVSS 5.4
EPSS 0.3%2025-03-21
High vulnerability · 2022-11-09
CWE-444
High · CVSS 7.5
EPSS 1.4%2022-11-09
High vulnerability · 2022-11-09
CWE-20
High · CVSS 7.5
EPSS 0.9%2022-11-09
High vulnerability · 2022-08-11
CWE-400
High · CVSS 7.5
EPSS 1.2%2022-08-11
Critical vulnerability · 2022-01-26
Critical · CVSS 9.1
EPSS 2.0%2022-01-26
Medium vulnerability · 2021-07-14
Medium · CVSS 6.5
EPSS 1.6%2021-07-14
High vulnerability · 2021-03-16
High · CVSS 7.5
EPSS 1.5%2021-03-16
High vulnerability · 2020-04-08
High · CVSS 7.5
EPSS 1.7%2020-04-08
High vulnerability · 2020-04-08
High · CVSS 7.5
EPSS 2.1%2020-04-08
High vulnerability · 2019-09-03
High · CVSS 7.5
EPSS 5.8%2019-09-03
Critical vulnerability · 2017-11-16
Critical · CVSS 9.1
EPSS 4.1%2017-11-16
High vulnerability · 2017-08-04
High · CVSS 7.5
EPSS 2.4%2017-08-04

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Frequently asked questions

Common questions about Varnish Cache vulnerabilities.

How many CVEs does Varnish Cache have?: Varnish Cache has 13 published CVE records since 2013, including 1 in the last two years.
How many Varnish Cache CVEs are in CISA KEV?: None of Varnish Cache's CVEs are currently listed in CISA's Known Exploited Vulnerabilities catalog.
Which Varnish Cache products have the most CVEs?: The Varnish Cache products with the most published CVEs are varnish-cache, Varnish Cache, varnish, varnish-modules, varnish-modules klarlack.
What are the most common weakness types in Varnish Cache CVEs?: Varnish Cache's CVEs most often map to these CWE weakness types: CWE-444 (Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')), CWE-20 (Improper Input Validation), CWE-400 (Uncontrolled Resource Consumption).
Are there public exploits for Varnish Cache vulnerabilities?: No Varnish Cache CVEs currently have a tracked public exploit in this dataset.
How many critical Varnish Cache vulnerabilities are there?: Varnish Cache has 2 critical and 8 high-severity CVEs.
What is the average severity of Varnish Cache CVEs?: The average CVSS base score across Varnish Cache's scored CVEs is 7.3.

References

Vulnerability data is sourced from the CVE Program; severity, KEV, and exploit signals are aggregated by RadicalNotion.AI.

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