How severe is CVE-2013-4090?

CVE-2013-4090 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2013-4090 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2013-4090?

CVE-2013-4090 affects Varnish Cache Project Varnish Cache. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2013-4090?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2013-4090 published?

CVE-2013-4090 was published on 2020-02-12 and last updated on 2026-06-16.

CVE-2013-4090

CVE-2013-4090 is a high-severity vulnerability in Varnish Cache Project Varnish Cache with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Varnish Cache Project Varnish Cache
Published: 2020-02-12
Last modified: 2026-06-16

Description

Varnish HTTP cache before 3.0.4: ACL bug

Frequently asked questions

What is CVE-2013-4090?: Varnish HTTP cache before 3.0.4: ACL bug
How severe is CVE-2013-4090?: CVE-2013-4090 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2013-4090 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2013-4090?: CVE-2013-4090 affects Varnish Cache Project Varnish Cache. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2013-4090?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2013-4090 published?: CVE-2013-4090 was published on 2020-02-12 and last updated on 2026-06-16.

References

https://www.varnish-cache.org/lists/pipermail/varnish-announce/2013-June/000684.html

Affected products (1)

cpe:2.3:a:varnish_cache_project:varnish_cache:*:*:*:*:*:*:*:*

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