CVE-2021-23259

CVE-2021-23259 is a medium-severity vulnerability in Craftercms Crafter Cms with a CVSS 3.x base score of 4.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-913.

Key facts

Description

Authenticated users with Administrator or Developer roles may execute OS commands by Groovy Script which uses Groovy lib to render a webpage. The groovy script does not have security restrictions, which will cause attackers to execute arbitrary commands remotely(RCE).

Frequently asked questions

What is CVE-2021-23259?
Authenticated users with Administrator or Developer roles may execute OS commands by Groovy Script which uses Groovy lib to render a webpage. The groovy script does not have security restrictions, which will cause attackers to execute arbitrary commands remotely(RCE).
How severe is CVE-2021-23259?
CVE-2021-23259 has a CVSS 3.x base score of 4.2, rated medium severity. It is exploitable over network with high attack complexity, requires high privileges and user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-23259 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-23259?
CVE-2021-23259 affects Craftercms Crafter Cms. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-23259?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-23259 published?
CVE-2021-23259 was published on 2021-12-02 and last updated on 2026-06-17.

References

Affected products (1)

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