CVE-2016-4326

CVE-2016-4326 is a critical-severity vulnerability in Chef Chef Manage with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Description

The Chef Manage (formerly opscode-manage) add-on before 1.12.0 for Chef allows remote attackers to execute arbitrary code via crafted serialized data in a cookie.

Frequently asked questions

What is CVE-2016-4326?
The Chef Manage (formerly opscode-manage) add-on before 1.12.0 for Chef allows remote attackers to execute arbitrary code via crafted serialized data in a cookie.
How severe is CVE-2016-4326?
CVE-2016-4326 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2016-4326 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2016-4326?
CVE-2016-4326 affects Chef Chef Manage. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2016-4326?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2016-4326 published?
CVE-2016-4326 was published on 2016-06-10 and last updated on 2026-06-17.

References

Affected products (1)